SSAW Steel Pipes

SSAW steel pipes

SAW steel pipe,SAW carbon steel pipes,SSAW carbon steel pipe

Details of SSAW steel pipes

Size:219.1mm to 3000mm

Standard:API, ASTM, GB,BS, DIN,JIS...

Material:

Q235A,Q235B,Q345,0Cr13,1Cr17,00Cr19Ni11,1Cr18Ni9,0Cr18Ni11Nb,L245,L290,X42,X46,X70,

X80 and so on.

Usage:

For liquid transportation:water supply,drainage,oil transportation.

For gas transmission: gas,steam,liquefied petroleum gas,natural gas.

For structural use: piling pipes,Bridges,wharves,roads,pipes for building structures, etc.

Manufacturing process:

1.The raw materials are strip steel coils, welding wire, and flux.strict physical and chemical inspections are required before inputting raw materials.

2.The strip head and tail are butt jointed by single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after coiling into steel pipe.

3.All welded seams are inspected by an online continuous ultrasonic automatic flaw tester, which ensures the nondestructive testing coverage of spiral welds. If there is a defect, it will automatically alarm and spray the mark, and the production workers can adjust the process parameters at any time to eliminate the defect in time.

4 Before forming, the strip undergoes leveling, edge trimming, edge planing, surface cleaning and conveying, and pre-bending treatment.

5.Adopt external control or internal control roll forming.

6.After cutting into single steel pipes, each batch of steel pipes must undergo a strict first inspection system to check the mechanical properties, chemical composition, surface quality of the steel pipe and non-destructive inspection to ensure that the pipe-making process is qualified before it can be put into production.

7.The parts on the welds marked with continuous acoustic detection shall be reviewed by manual ultrasonic and X-ray. If there is any defect, after being repaired, it shall be subjected to non-destructive testing again until the defect is confirmed to be eliminated.

Product show:

Hot Tags: ssaw steel pipes China, manufacturers, suppliers, factory, high quality, buy