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ASME B16.9 Butt Weld Eccentric Reducer
Seamless eccentric reducer for butt welding
Sch40 (Std) weight wall thickness
Made of black ASTM A234 WPB carbon steel Material
Conforms to the ASME B16.9 standard for butt weld fittings.

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+8618003119682

Key applications include:
1. Sewage and Wastewater Systems: Employed to prevent the buildup of air pockets and facilitate smooth flow in sewage and wastewater pipelines.
2. Pumping Systems: Integrated into pump discharge lines to prevent air entrapment and ensure efficient operation.
3. Slurry Transport: Used in pipelines transporting abrasive slurries, where air pockets can cause blockages or pump cavitation.
4. Chemical Processing: Utilized in chemical plants for applications requiring controlled fluid flow and avoidance of air pockets.

Fitting Type: Butt Weld Eccentric Reducer

Connections: Butt Weld Ends (ASME B16.25 Beveled)

Standards: ASME B16.9, GOST 17378
Material: ASTM A234 WPB Carbon Steel (Seamless), Stainless Steel, Alloy Steel

admin@jsfittings.com

+8618003119682
Butt Weld Eccentric Reducer | A234 WPB Carbon Steel Pipe Fittings

A buttweld eccentric reducer is a type of pipe fitting used to connect two pipes of different diameters while maintaining the same bottom line. Unlike concentric reducers, which are symmetrical, an eccentric reducer has an edge parallel to the connecting pipe, making it ideal for applications where air pockets or drainage are concerned.



Key Specifications

Fitting Type: Butt Weld Eccentric Reducer


Connections: Butt Weld Ends (ASME B16.25 Beveled)


Standards: ASME B16.9, GOST 17378


Material: ASTM A234 WPB Carbon Steel (Seamless), Stainless Steel, Alloy Steel



Technical Specifications

Specification Details
Product Name Butt Weld Eccentric Reducer
Size Range 1/2â?³ to 48â?³ (DN15 â?? DN1200); Larger sizes available
Wall Thickness Sch 10, Sch 20, Sch 40 (STD), Sch 80 (XS), Sch 160, XXS (2mm-32mm)
Manufacturing Seamless (up to 24â?³) & Welded (Large Diameter)
Surface Treatment Black Paint, Anti-rust Oil, Galvanized, or Pickled

Material Grades Available


Carbon Steel: ASTM A234 WPB (Standard for high-temp), ASTM A420 WPL6 (Low-temp).

Stainless Steel: ASTM A403 WP304/304L, WP316/316L (Chemical/Water treatment).

Alloy Steel: ASTM A234 WP11, WP22, WP5, WP91 (High-pressure/High-temp).

Duplex Steel: ASTM A815 UNS S31803, S32205.


Comparison: Concentric vs. Eccentric Reducer

Concentric Reducer: Centerline remains consistent. Used when fluid flow is relatively uniform and pressure drop is minimized.


Eccentric Reducer: One side is flat (maintains bottom/top alignment), preventing cavitation. Ideal for constant flow or gravity feed.


Carbon steel Buttweld Concentric vs. Eccentric Reducers


Why Choose Our Butt Weld Eccentric Reducers?


Optimized for Pump Suction: Prevents air bubble accumulation, eliminating cavitation risks.

Robust Leak-Proof Connections: Butt weld bonds ensure structural integrity under high pressure and vibration.

Precision Beveling: Machine-beveled ends (ASME B16.25) ensure faster, cost-effective field welding.

Rigorous Quality Testing: Includes Hydrostatic testing, NDT (UT, RT, MT), and PMI material verification.



FAQ

Q: When should I use an Eccentric Reducer instead of a Concentric one?

A: Use in horizontal piping systems, specifically at the pump suction side to prevent air traps.


Q: Do you supply seamless eccentric reducers?

A: Yes, seamless up to 24 inches; larger diameters are welded with X-ray inspection.




Ready to Order?

Get a competitive price for your project today.


Email: admin@jsfittings.com

The aluminum fins are embedded in a spiral groove about 0.25~0.5mm deep on the surface of the steel pipe, while the metal extruded from the spiral groove is rolled back to the fin root. This specialized manufacturing process is a hallmark of high-performance G finned tubes.

The biggest advantage of this G fin tube is that it has good thermal performance, the working temperature can reach 350-400, and the fin temperature can reach 260, and the maximum use temperature of G type finned tube is 350 as stipulated in GB/T 15386-94, the national standard of air cooler.

The disadvantage is that the fins and tubes of the two metals in the atmosphere are prone to electrochemical corrosion, poor corrosion resistance and high cost. The tube wall has stress concentration and cannot be used for medium and high pressure applications. If the pressure is not squeezed well (the edge of the spiral groove is not close to the aluminum sheet), its heat transfer performance is worse than any finned tube.

G-Type finned tubes, also known as grooved finned tubes or embedded-fin tubes, are one of finned tube types where the "G" stands for grooved. These tubes are formed by twisting a fin strip, typically made of copper or aluminium, into a machined groove on the outer surface of the tube. The fin strip is then back-filled to securely lock it in place, ensuring a tight fit. The base tube material is completely surrounded and filled by the fins.

The specific materials, dimensions, and groove designs of G finned tubes can vary depending on the application requirements and operating conditions. Factors such as fluid characteristics, operating temperature, and pressure influence the selection of materials to ensure optimal heat transfer performance.

In summary, G-Type finned tubes are a robust and effective solution for high-temperature heat transfer applications. Their grooved design and secure locking mechanism provide strength and durability, enabling efficient heat exchange and contributing to overall system performance.

Why G-type Finned Tube?
Grooved finned tubes offer several advantages. The grooved design significantly increases the surface area of the tube, enhancing heat transfer efficiency. These G type fin tubes provide excellent strength and durability, making them suitable for applications requiring high-temperature heat transfer. The tight fit of the fins ensures efficient heat dissipation or absorption.

Grooved finned tubes are typically made of materials like copper or aluminium. The selection of the material depends on factors such as the application requirements, operating temperature, and compatibility with the working fluid.

The grooved design of the fins increases the surface area of the tube, allowing for better heat transfer. This enhanced surface area facilitates efficient heat dissipation or absorption, leading to improved overall heat transfer performance.

We are Cangzhou Haoyuan Pipe Fittings MFG CO.,LTD, a leading pipe fitting and pipe manufacturers in China, can offer you the top products design, good quality fittings.
Our main production line is

1)pipes:seamless steel pipes, Casing pipe, ERW steel pipe,SSAW steel pipe, Anticorrosion steel pipe
2)steel Seamless Butt Welded Pipe Fittings (Elbow, Reducing and Equal Tee,Eccentric and Concentric
Reducer,Caps,Bend,Cross,return),produce strict as per GB12459,GOST17375/17376-2001, ASME/ANSI B16.9/16.28, DIN 2605/2615/2616/2617,JIS B2311/2312/2313,
EN10253.......)
3)flanges:according to ASTM / DIN / JIS / BS / GB and so on

1. Product name: ERW/LSAW steel pipe
2. OD: 17-1200mm
3. WT: 4-20mm
4. Length: 5.8-11.8m or as the client's requirement
5. Standard: GB/T13793,GB/T14291,GB/T3091,ASTM A53,ASTM A135,ASTM A513,ASTM A671,DIN 1626,EN 10217,BS1387
6. Material: Q235,Q345,20#,A106,A53,A500,ST37,ST52,S235,S275,S355
7. Application: chemical fertilizer pipe, fluid delivery,container skeleton,machinery,construction industry,etc.
8. Productive technology:erw/lsaw
9. Packaging: painting,oil,packed by steel strip into bundles
10. Payment: L/C,T/T
11. Delivery time:15-30 days or as the quantity
12. Port: Xingang,China
13. Trade terms: FOB,CIF,CFR
14. MOQ:10 tons
15. Productivity: 6000 tons/month.

Down lead clamp for tower

The down lead clamp is used in rivet the fiber when jumping or down lead , and it was commonly installed every 1.5 to 2 meter each set.

Flanged Hard-Seal Gate Valve
Metal Seated Gate Valve for High Pressure & Temperature | Flanged Gate Valve Supplier

The Flanged Hard Seal Gate Valve is a heavy-duty industrial valve designed for reliable shut-off in high-pressure and high-temperature pipeline systems. Featuring a metal-to-metal sealing structure, this valve ensures excellent durability, wear resistance, and long service life in demanding environments.

With a full bore design and flanged connection, it provides low flow resistance and stable sealing performance, making it ideal for water, oil, gas, steam, and industrial fluid control systems.
Standards & Certifications

Our  gate valves  are manufactured in compliance with international standards:
 Design Standard: API 600 / GB/T 12234


 Face to Face: GB/T 12221 / EN 558


 Flange Standard: ANSI B16.5 / DIN / BS


 Test & Inspection: API 598 / GB/T 13927

Product Features and Advantages
Pressure and wear resistant, adaptable to harsh working conditions : The metal-to-metal sealing structure is wear resistant, high temperature resistant, and high pressure resistant, making it suitable for oil, gas, steam, corrosive media, etc.
Long service life and reliable sealing : Even after long-term operation, the metal sealing surface wears slowly and can still maintain good sealing and pressure resistance.
�·�  � Wide range of pipe diameters and pressure ratings : capable of producing pipes from small diameters to large diameters, and multiple pressure ratings (PN/Class) to meet various industrial design requirements.
Compatible with a variety of materials and standards : carbon steel, stainless steel, alloy steel, ductile iron and other materials are available, and it supports DIN / ANSI / API / GB and other standards.

Size Specifications and Standards

Wide range of specifications are available, from small DN 50-100 to large DN 600+, all customizable.
Pressure ratings cover PN10 / PN16 / PN25 / higher (depending on material and structural design).
 Flange connections meet international standards such as ANSI, DIN, BS, and API , and are compatible with international projects.

Functions and Applications

Hard-seal gate valves are mainly used in: oil and gas pipelines, petrochemical plants, high-pressure steam systems, industrial chemical pipelines, high-temperature and high-pressure systems, power plant steam pipelines, heavy industrial conveying systems, and other scenarios. They are particularly suitable for systems requiring high pressure, high temperature, wear resistance, corrosion resistance, and long-term stable operation.

Categories Carbon Steel Pipe Tees
Brand JS FITTINGS
Model JS-T
Brand JS FITTITNGS
Smaller size than DN 600 Seamless
Bigger than DN 600 welded
Color primary color
Type Equal Tee, reducing tee
Thickness STD/XS/SCH20-160 and 2mm-50mm, etc.
FOB port Tianjin XinGang, Qingdao, shanghai, Shenzhen, Guangzhou, Yiwu
� 
Service of JS FITTINGS
� 
JS FITTINGS is Credible, Trustworthy and Sincerely to Customer
� 
1. All orders will be treated carefully by sales department, production department, testing department, packaging department and transportation department.� 
2. After signing the contracts, JS won't change the price during the valid time even the material cost increases a lot.
3. Reasonable demands will be acceptable without additional cost.

We supply kinds of Helical Steel Pipe and Carbon Steel Seamless Pipe, special design available according to your requirements! Choose us, you can be get most careful and thoughtful service!
We also provide Seamless steel pipe, Square Steel Pipe, Carbon Steel Pipe Cap, bend Pipe
SSAW carbon schedule 40 steel pipe:
COMMODITY SSAW Welded steel pipes
DIMENSION 100-3000 MM
THICKNESS 5-50MM
LEMGTH 3-12M or customized
MATERIAL Q195 Q215 Q235 Q345 20# 10#
STANDARD ASTM GB BS DIN EN
PAYMENT T/T. L/C
TRADE TERMS FOB/CFR/CIF/EXW
MIN QUANTITY 3 Ton
DELIVERY TIME Within 15-30 after deposit
END TREATMENT plain/beveled/threaded with sockets/coupling and plastic caps/flange
SURFACE TREATMENT 1. bared
2. black painting(black varnish)
3. transparent oil4.hot galvanized
INSPECTION hydraulic testing, infrared test
PACKAGE 1. bundle
2. in bulk
3. bags
4. according to clients' requirements
APPLICATION mechanical&manufacture, oil, gas, steel structure, ship building, bridging, automobile etc.
NOTICE 1. special design available according to your requirements,
2. anti-corrosion and high-temperature resistant with black painting

Pipe fitting

And selling pipe fittings and
Forging steel flanges.
Details as follows:
Products: butt-weld pipe
Fitting , for example
Elbows, tees, reducers, caps
Flanges , bends.
Sizes: 1/2ís---48ís
Material:carbon steel.
Standard:ansi, din, jis, bs, uni
Hope that we can cooperate

1.Product catalogue: elbows, tees, reducers, caps, bends, nipples and flanges
2.Size: from 1/2" to80"
3.Angles: 45 deg, 90 deg, 180 deg
4.Thickness:sch20, sch30, sch40, std, sch80, sch100.Sch120, sch160.Xxs
5.Standard:ansi, asme, din, jis, bs, gb
6.Material: carbon steel (seam & seamless)
7.Packing : wooden cases & pallets
Special design available as the requirements of customer



Wooden cases & pallets