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ASTM A192/ASME SA192: Seamless Carbon Steel Boiler Tubes for High-Pressure ServiceStandard: ASTM A192/ASME SA192

* We can supply various grades of seamless boiler pipes, such as A192.

* Description: ASTM A192/ASME SA192 seamless carbon steel boiler tube implements to carbon steel boiler and super heater substantial pressure and the minimum thickness. It is typically used for manufacturing ruthless boiler (The working pressure is not more than 9.8 MPa and the significant temperature is between 450â?? and 650â??.), heating surface tube box, economizer, superheater, reheater, boiler water wall and steam pipe. JST seamless boiler pipes are featured with high yield strength, high tensile strength and high elongation. Pressure to succeed resistance is guaranteed in the very smooth inside material.

Advantages of our Seamless carbon steel boiler tube
The hot-rolled high pressure seamless boiler pipe does not need heat treatment. Very first last cold drawing, cold drawn
high-pressure seamless carbon steel boiler pipe will enter into the micro oxidation non-oxidation thermal treatment air
conditioner. It will conduct heat treatment in the temperature of 1200â?? (650 â??) or a more significant temperature, so how the surface of seamless carbon steel boiler tube is in non oxidation state and is relatively smooth, and the performance will are more stable.

We have professional hardness testing equipment and professional testing personnel for testing seamless boiler pipes. Brinell hardness should not exceed 137 HB for those pipes with the wall thickness of during or equal to 0.200 inch (5.1 mm), while it will not exceed 77 HRB for those seamless carbon steel boiler tubes with the wall thickness of less than 0.200 inch (5.1 mm).

SA210 Gr.A Alloy Seamless Pipes
ASTM A210 Grade A-1 Carbon Steel Seamless Tubes are Medium Carbon Steel Tubes with max 0.27 % carbon content with combination of max 0.93 % manganese.
These Tubes are most commonly used for general purpose applications worldwide. ASTM A210 Grade A-1 Tubes are ductile and strong Tubes with long wearing properties.
These Tubes are manufactured as per ASTM Specification and commercially referred as carbon steel Tubes.

ASTM A335 P11 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

4140 Alloy Tubing is a low alloy steel, with the addition of chromium, molybdenum and manganese as alloying elements, combined with heat treatment, gives 4140 alloy the advantage of hardness, ductility, and strength. Commonly used in applications for Oil and Gas, Agricultural equipment, and heavy machinery components.

4140 Alloy tubing Meets ASTM A519 standards
Stocked Size Range: 3â?? OD â?? 15â?? OD; 0.375â?? wall â?? 2.0â?? wall thickness
Available in Annealed, Quench and Tempered, and Normalized
Cut to length service available

These pipes are manufactured into different shapes, sizes, and forms as per the requirement of customers. We even make sure that both national and international specifications are included to make high-quality products. Owning the knowledge and skills of qualified professionals and using the latest technology we are able to produce all lengths, shapes, and sizes of seamless pipes. These seamless pipes exhibit various features and properties which make these pipes suitable for all types of application. The features include hardness, toughness, durability, workability, formability, high tensile strength, corrosion and oxidation resistance, and long service life. The entire features make seamless pipes even more popular and demand a wide range of applications.

S355J2+N are considered as the most common high strength steel that is mainly used for the construction purpose. This non-alloy structural steel is used in a wide range of applications. The steel is also an excellent choice for critical components. The alloy steel is supplied to manufacturers in hot rolled condition and has high yield strength.

Furthermore, it is welder-friendly, high tensile strength, low carbon structural steel that can be readily welded. The steel possesses excellent cold-forming properties. Here symbol â??Sâ?? symbolizes structural steel; J2 symbolizes 20 temperature impact tests.

These are the two most important processes done in order to check the quality of seamless pipes. The pipes are manufactured as per the demand and with respect to industrial rules and regulations. The tests include a hardness test, pitting resistance test, flaring test, flattening test, ultrasonic test, third-party inspection, and radiography test. There are few more tests done in order to check the quality of this S355J2+N SEAMLESS PIPE such as positive material identification test, chemical composition analysis, visual inspection and more. The entire testing process is done under the guidance of experts. At last, when all the tests are done these seamless pipes are packed in the high quality of packaging material like wooden cases/boxes, pallets, carton boxes or shrink wrappers. While packing these pipes proper labeling is done on the boxes as this helps customers to easily identify the product.

Hot Rolled ASTM 106 black carbon Iron seamless steel pipe


Carbon steel pipe,

Petroleum casing pipe,

Fluid pipe,

structure pipe,

Alloy steel pipe


2. Specification:



OD:21.3-610MM,

WT:5.5-100mm

Length: 1-12m, or as clients requirement




3.Standard:

API 5L,API 5CT,ASTM A106,ASTM A53, GB/T8162,GB/T8163,GB/T5310,GB/T3087,GB18248


4.Steel Grade:

GrA,GrB,X42-X70,Q345B,ST37,ST37.2,10#,20#,J5,K55,N80,L80,T95,C95,P110,Q125



5. Surface Treatment:

Galvanized, anti-rust coating, black painting, etc



6. Package:

1) In bundle with steel strips;

2) By plastic bag then strips;

3) As client' requirements

Hot Rolled ASTM 106 black carbon Iron seamless steel pipe


Carbon steel pipe,

Petroleum casing pipe,

Fluid pipe,

structure pipe,

Alloy steel pipe


2. Specification:



OD:21.3-610MM,

WT:5.5-100mm

Length: 1-12m, or as clients requirement




3.Standard:

API 5L,API 5CT,ASTM A106,ASTM A53, GB/T8162,GB/T8163,GB/T5310,GB/T3087,GB18248


4.Steel Grade:

GrA,GrB,X42-X70,Q345B,ST37,ST37.2,10#,20#,J5,K55,N80,L80,T95,C95,P110,Q125



5. Surface Treatment:

Galvanized, anti-rust coating, black painting, etc



6. Package:

1) In bundle with steel strips;

2) By plastic bag then strips;

3) As client' requirements

hollow section for building structure
Quick details of hollow section pipe
Square Tube Dimension: 20mm*20mm-1000*1000mm
Rectangular Tube Dimension: 20mm*30mm-600mm*1000mm
Thickness:2mm-35mm
Length:6m-12m , or as per customers requirements
Standards:DIN EN10210,EN10219,GB/T3094-2000,ASTM A500,JIS G 3466,GB/T6728-2002
Steel Grades:Q195, Q235, Q345(16Mn), STKR400/490, A500, ST37/44/52, S235, S275, S355, etc.
Surface Treatment: anti-rust oil, black painting, galvanizing
Packing: in bundles with steel strips or in bulk as per customer request
Applications: Construction framework,  trestle, motorcar cassis,flight terminal framework, shipbuilding, automobile axle pipe, MRT and so on


There are two sorts of square steel pipe: welded and also seamless.And rate for smooth square Pipe is frequently higher than that of welded type. Bonded square Pipe is constructed from steel plates or steel coils. Smooth square Pipe is made of round Pipes, which always offers the completed items high mechanical prosperities.

Contact us:If you have any questions about product details or need service, please feel free to contact me.
Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/
Wechat:brsteelsales2

SSAW steel pipe for conveying gas
Company Hebei Borun Steel Trade Co., Ltd
Product Name SSAW steel pipe
Outside Diameter 219.1 2540mm (8â?³ -100â?³)
Wall Thickness 6mm 25.4 mm
Length 6-13m
Steel Grade Q235, Q345, A53, L245, L290, API 5L GR B, X42 ,X46, X70, S355, S275, S235
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
Packing in bulk due to big sizes
TPI SGS, BV, MOODY, CCIC
Details of surface treatment
Single-Layer FBE Coating SY/T 0315-2005, CAN/CSA Z245.20-2010, DEP 31.40.30.32-Gen-2011, ISO 21809-2-2007, API RP 5L9-2001

Double-Layer FBE Coating
Q/CNPC 38-2002, CAN/CSA Z245.20-2010
2LPE/2LPP Coating
SY/T 0413-2002, GB/T 23257-2009, ISO 21809-1-2009
3LPE/3LPP Coating SY/T 0413-2002, GB/T 23257-2009, DIN 30670-1991, CAN/CSA Z245.21-2010, ISO 21809-1-2009, NF A49-711-1992, NF A49-710-1988
Insulation Coating SY/T 0415-1996, CJ/T 114-2000, EN 253-1994
Application SSAW steel pipe is typically used to transfer gas, oil, or water
Main Market South and East Asia, Middle East, Europe and America

SSAW pipe used for building bridge
Company Hebei Borun Steel Trade Co., Ltd
Product Name SSAW steel pipe
Outside Diameter 219.1 2540mm (8â?³ -100â?³)
Wall Thickness 6mm 25.4 mm
Length 6-13m
Steel Grade Q235, Q345, A53, L245, L290, API 5L GR B, X42 ,X46, X70, S355, S275, S235
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
Packing in bulk due to big sizes
TPI SGS, BV, MOODY, CCIC
Details of surface treatment
Single-Layer FBE Coating SY/T 0315-2005, CAN/CSA Z245.20-2010, DEP 31.40.30.32-Gen-2011, ISO 21809-2-2007, API RP 5L9-2001
Double-Layer FBE Coating
Q/CNPC 38-2002, CAN/CSA Z245.20-2010
2LPE/2LPP Coating
SY/T 0413-2002, GB/T 23257-2009, ISO 21809-1-2009
3LPE/3LPP Coating SY/T 0413-2002, GB/T 23257-2009, DIN 30670-1991, CAN/CSA Z245.21-2010, ISO 21809-1-2009, NF A49-711-1992, NF A49-710-1988
Insulation Coating SY/T 0415-1996, CJ/T 114-2000, EN 253-1994
Application SSAW steel pipe is typically used to transfer gas, oil, or water

Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

LSAW pipes for fluid transportation
Company Hebei Borun Steel Trade Co., Ltd
Product Name LSAW steel pipe
Out Diameter 325-1420mm (14â?³ -60â?³)
Production Process JCOE
Wall Thickness 8-40mm
Length 3-13m
Standards API 5L, ASTM A672, ASTM A53, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1
Steel Grades Q235, Q345, L245, L290, A53, S235, S275, S355, GR.B/X42/X46/X56, A672 B60 CL22
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bulk due to big sizes
Surface Treatment anti-rust black painting, anti-corrosion treatment (FBE, 3PE, 2PE)
TPI ( Third Party Inspection) SGS, BV, MOODY, CCIC
Applications liquid shipping like oil, water and fuel, building and constructions, chemical vegetation, power station, as well as foreign drill system.
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
Seamless pipe,OCTG(API 5CT Casing pipe/Coupling/Tubing),ERW/SSAW steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

Electric Resistance Welding pipe
Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

ERW pipe for energy
Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

Electric Resistance pipeline
Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

ERW tube for steam transportation
Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/
Photo
Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

ERW pipe for protective wire
Company Hebei Borun Steel Trade Co., Ltd
Products ERW pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Standard API 5L, ASTM A53, BS1387, EN10219, EN10210, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1, JIS G3444, JIS G3452
Steel Grade S235, S275, S355, A53, Q195, Q235, Q345, L245, L290, Gr.B, X42-70 etc
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications civil building and construction, petrochemical sector, light market, fluid transferring sector, mechanical components
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

LSAW pipes for nature gas transportation
Company Hebei Borun Steel Trade Co., Ltd
Product Name LSAW steel pipe
Out Diameter 325-1420mm (14â?³ -60â?³)
Production Process JCOE
Wall Thickness 8-40mm
Length 3-13m
Standards API 5L, ASTM A672, ASTM A53, SY/T5768 -2006, GB/T3091 -2008, GB/T9711 -1
Steel Grades Q235, Q345, L245, L290, A53, S235, S275, S355, GR.B/X42/X46/X56, A672 B60 CL22
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bulk due to big sizes
Surface Treatment anti-rust black painting, anti-corrosion treatment (FBE, 3PE, 2PE)
TPI ( Third Party Inspection) SGS, BV, MOODY, CCIC
Applications liquid shipping like oil, water and fuel, building and constructions, chemical vegetation, power station, as well as foreign drill system.
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/

Other products
Seamless pipe,OCTG(API 5CT Casing pipe/Coupling/Tubing),ERW/SSAW steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!

Lead Sheet :

APPLICATIONS: Radiation Shielding –laboratories, Hospitals, Dental Offices and Veterinary Clinics, Construction Roofing, Flashing and Waterproofing Corrosion Protection Acid Storage and Handling Autoclaves Precipitators Movable Lead Screens Sound Barriers and Sound Proofing Nuclear Energy Shielding Tank Lining Vibration Absorbers OurSheet Leadhas a consistent and high density manufactured from pure lead conforming to ASTM B-29, B-749 and Federal QQ-L-201F, QQ-L-171E. We use only the purest lead available 99.94% purity.

12Cr1MoVG material alloy pipe
Company Hebei Borun Steel Trade Co., Ltd
Products alloy pipe
Out Diameter 1/2â?³ -24â?³ ( 21.3-610mm)
Wall Thickness 2-20mm
Length 5.8m/ 6m/ 11.8m/ 12m or any fixed length as per customer request
Material 12Cr1MoVG ã?? 15CrMoG ã??10CrMo910(P22)ã??A335P11ã??Cr5Mo(P5)ã??Cr9Mo(P9)ã??A335P91(T91) ã??20#ã??16MN
End Plain, Beveled
Surface Treatment light-oiled, black painting , hot galvanizing, sand blasting, FBE, 2PE, 3PE etc
TPI SGS, BV, MOODY, CCIC can be arranged before shipment.
Packing in bundles with steel strips or in bulk as per the loading requirements
Applications Oil, aerospace, chemical, electric power, boiler, military and other industries
Main Market South and East Asia, Middle East, Europe and America
Contact Info Contact name:Jenna Yan
Tel:8603175501333
E-mail:Sales2@brsteel.org
Skype:Steel-Jenna
Whatsapp:+8613292790570
Wechat:brsteelsales2
Linkedin:https://www.linkedin.com/in/jenna-yan-steel-pipe-trading-10843b16a/
Other products
Seamless pipe, OCTG(API 5CT Casing pipe/Coupling/Tubing),seamless steel pipe,Hollow section pipe,Galvanized steel pipe
Our company has 15 yearsexperience of steel trading!Hope to establish business with you!