SSAW steel pipe is made of strip coil, welding wire and flux. Before forming, the strip is leveled, trimmed, planed, cleaned and transported on the surface, and bent. The weld gap control device is used to ensure that the weld gap meets the welding requirements. The pipe diameter, misalignment and weld gap are strictly controlled. After cutting into a single steel pipe, the first three of each batch of steel pipes are subject to strict first inspection system, in order to check the mechanical properties, chemical composition, fusion state and surface quality of the weld, as well as through non-destructive testing to ensure that the pipe manufacturing process is qualified, it can be formally put into production.

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According to the purpose of welding steel pipe can be divided into general welding pipe, galvanized welding pipe, oxygen blowing welding pipe, wire casing, metric welding pipe, roller pipe, deep well pump pipe, automobile pipe, transformer pipe, welding thin wall pipe, welding special-shaped pipe and spiral welding pipe. Welded steel pipe according to end shape can be divided into circular welded pipe and irregular (square, flat, etc.) welded pipe.

General Standard and Application of SSAW Steel Pipe
S.N.StandardsApplication 
1ASTM A134Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over) Steel Pipe
2ASTM A139Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
3ASTM A381Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission Systems
4ASTM A671Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
5ASTM A672Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
6ASTM A691Carbon and Alloy Steel Pipe Electric-Fusion-Welded for High-Pressure Service at High Temperatures
7EN 10208-1Steel Pipes for Pipelines for Combustible Fluids-Pipes of Requirement Class A
8EN 10208-2Steel Pipes for Pipelines for Combustible Fluids-Pipes of Requirement Class B
9EN 10217-1Welded Steel Tubes for Pressure Purposes-Non-alloy steel tubes with specified room temperature properties
10EN 10217-2Welded Steel Tubes for Pressure Purposes-Electric Welded Non-alloy and Alloy Steel Tubes with Specified Elevated Temperature Properties
11EN 10217-3Welded Steel Tubes for Pressure Purposes-Alloy fine grain steel tubes
12EN 10217-4Welded Steel Tubes for Pressure Purposes-Electric Welded Non-alloy and Alloy Steel Tubes with Specified Low Temperature Properties
13EN 10217-5Welded Steel Tubes for Pressure Purposes-Submerged Arc Welded Non-alloy and Alloy Steel Tubes with Specified Elevated Temperature Properties
14EN 10217-6Welded Steel Tubes for Pressure Purposes-Submerged Arc Welded Non-alloy Steel Tubes with Specified Low Temperature Properties
15EN 10224Non-alloy Steel Tubes for the Conveyance of Water and Other Aqueous Liquids
16EN 10255Non-alloy Steel Tubes Suitable for Welding and Threading
17EN 10288Steel Tubes and Fittings for Onshore and Offshore Pipelines
18EN 10296-1Welded Circular Steel tubes for Mechanical and General Engineering Purposes-Non-alloy and Alloy Steel Tube
19DIN 30670Polyethylene Coatings on Steel Pipes and Fittings
20SY/T 0413Polyethylene Caoting for Buried Steel Pipeline
21ISO 3183Steel Pipe for Pipelines Transportation Systems
22API 5LSpecification for Line Pipe



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