Seam or not would be an important factor to recognize the seamless and ERW steel pipe. For the last one, we have to concern about the cold crack as this has determined function for the quality of this kind of tube.
Joints of welded steel tube, cooling to a lower temperature, are generated by the welded cracking. Thus, we should figure out the technological parameters for guaranteeing the high quality of welded steel pipe. In general, we will call it cold cracking, which includes delayed cracking, thermal stress cracking and lamellar tearing. And if you want to judge the types of cold crack, there is the reference for it: boundary cracks, under-bead cracks and root cracks.
We deals in the following products of India, China, Taiwan and Korea Origin:- ERW Steel Pipes
Item Hot Dipped Galvanized Round Steel Pipe/GI Pipe/Galvanised Tube OD 20~405mm in theory Thickness 1.2~15.7mm Length Any Length Below 16 Meter Standard GB,ASTM,BS,EN,JIS Material Chinese Grade, Q195, Q215 Q235, Q345 ASTM, Grade B,Grade C,Grade D,Grade 50 EN, S185,S235JR,S235JO,E335,S355JR,S355J2 JIS, SS330,SS400,SPFC590 Application Used For Water, Gas, Stream, Combustible Fluids And Other Liquid Delivery Ends Plain, Beveled, Thread With Couplings Or Sockets; Plastic Caps And Steel Rings Can Be Provided If Possible Surface Bared, Galvanized, Oiled, Color Paint, 3PE; Or Other Anti-corrosive Treatment Technique Hot Rolled Or Cold Rolled ERW Package Covered With Tarpaulin, Containers Or In Bulk
Product introduction ERW Steel Pipe: Pipe Type: ERW Pipe, ERW Steel Pipe, Electric Resistance Welded Pipe Application: For Low Pressure Fluid Transmission, Machinery Manufacturing Specification: OD: 21.3mm ~ 660mm WT: 1mm ~ 17.5mm LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL) Standard & Grade: API 5L PSL1/PSL2 Gr.A,Gr.B,X42,X46,X52,X56,X60,X65,X70 ASTM A53, ASTM A500, JIS G3466, ASTM A252, ASTM A178, AN/NZS 1163, AN/NZS 1074, EN10219-1, EN10217-1 End: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends Surface: Bare, Lightly Oiled, Black/Red/Yellow Painting, Zinc/Anti-corrosive Coating Packing: Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped Production Process for ERW steel pipe: 1.Uncoiling 2. Leveling --- 3. End cutting --- 4. End shearing welding --- 5. Supercoil accumulator --- 6. Edge cutting --- 7. Ultrasonic detection --- 8. Forming --- 9. Electric induction welding --- 10. Ultrasonic detection for weld seam --- 11. Medium frequency heat treatment --- 12. Air cooling --- 13. Water cooling --- 14. Sizing --- 15. Flying cutting --- 16. Flush-out --- 17. Cropping --- 18. Flattening testing --- 19. Straightening --- 20. End facing and bevelling --- 21. Hydrodynamic testing --- 22. Ultrasonic detection for weld seam --- 23. Ultrasonic detection for pipe end --- 24. Visual and dimensions inspection --- 25.Weighting and measuring --- 26. Marking --- 27. Coating --- 28. Pipe-end protection --- 29. Bending --- 30. Shipping Specification of ERW steel pipe: API 5L/ASTM A53 GR.B (Small Diameter ERW Steel Pipe) Outside Diameter Wall Thickness Outside Diameter Wall Thickness (mm) (mm) (mm) (mm) 33.4 (1") 2.1-2.4 133 3.0-5.75 2.5-3.25 6.0-7.75 3.5-4.0 8.0-10 42.3 (1.2") 2.1-2.4 139.7 (5) 3.0-4.5 2.5-3.5 4.75-5.75 3.75 6.0-7.75 4.0-5.0 8.0-10 48.3 (1.5") 2.1-2.4 152 3.0-4.5 2.5-3.25 4.75-5.75 3.5-3.75 6.0-7.75 4.0-4.25 8.0-10.0 4.5-6.0 159 3.25-6.75 60.3 (2) 3.0-4.0 6.8-7.75 4.25-4.75 8.0-10.0 5.0-5.75 10.0-11.75 73 3.0-4.75 165 3.0-6.0 4.8-5.25 6.25-7.0 5.5-7.0 76.1 Warehouse Storage Shandong Jintuo Metal Materials Co., Ltd is located in Liaocheng City, the capital of steel tubes. It is a large enterprise specializing in the sales of carbon steel, stainless steel, galvanized color coated products, and copper and aluminum.Our company adopts a flexible business approach and management mechanism to provide good services to customers, while also considering the interests of the owner and the project, in order to ensure the quality of the project.
We deals in the following products of India, China, Taiwan and Korea Origin:- ERW Steel Tube
Product Name Precision Steel Pipe Standard DIN2391 EN10305-1 ASTMA179 ASTM A192 ASTM A519 Material SAE1010,SAE1020,#10,#20,#45,304,316 Outer diameter 8MM-50MM Wall thickness 0.5-50.0MM Length fixed(3-12m) or customized Technology High precision Cold drawn/ Cold rolled Heat treatment BK/BKS/NBK Advantages Short delivery time Quality assurance Competitive price
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
We deals Galvanized Steel Pipes used for Agriculture and Irrigations, Water Pipeline, Road Barriers. In addition to round pipes, we can also supply galvanized pipes in square and rectangular sections.Hot Dip Galvanized pipes in sizes from 1/2" To 6 OD and in wall thickness ranging from 1MM to 6MM. Our company is specializing in the galvanized pipes, welded pipes and other pipes. Surface hot dipped galvanized, Pre-gavanized, electro galvanized, painted, threaded, beveled, grooved, engraved Usage Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture, Lowpressure fluid pipe for water oil or gas, Boiler pipe.
