Process:ERW (Electric Resistance Welded)HFI (High Frequency Induction)EFW(ELECTRIC FUSION WELDED TUBE)Quality Standard:ERW HFI , EFW,:GB/T3091 Welded steel pipe for low pressure liquid deliveryGB/T9711 Petroleum and natural gas industries--Steel pipe for pipelinesIS: 3589 Steel tubes for water and sewageIS : 1978-1982? Steel tubes for use in transportation of oil; gas & Petroleum products?BS: 1387 Steel Tubes for use for Water, Gas, Air and SteamASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessDIN 2458 WELDED STEEL PIPES AND TUBESEN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature propertiesAPI 5L Line PipeCoating Standard:ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for WaterISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systemsDIN 30670 Polyethylen coatings of steel pipes and fittings.
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
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
Circular steel pipe is both openings and have hollow concentric sections of steel larger than the surrounding. The specifications of steel pipes are indicated by appearance dimensions and inner diameter and wall thickness, with a wide range of dimensions from very small diameter capillary to large round steel pipe of several meters in diameter. Round steel pipes can be used for pipelines, thermal equipment, machinery industry, petroleum geological drilling, containers, chemical industry, and special uses. It can be divided into seamless, ERW, LSAW, SSAW steel pipe according to the production process.
