Spiral Welded Pipe

The low-carbon carbon structural steel or low-alloy structural steel strip is rolled into a tube blank at a certain spiral angle (called forming angle), and then the tube seams are welded together. It can produce large-diameter steel pipes with narrower strips. Its specifications are expressed by outer diameter * wall thickness. The welded pipe should ensure that the water pressure test, tensile strength of the weld and cold bending performance meet the requirements.

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Product Introduction

Classfication

Standard

Main Products

Steel Pipe for Fluid Service

GB/T 14291

Welded pipe for mine fluid sevice

GB/T 3091

Welded pipe for low pressure fluid service

SY/T 5037

Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service

ASTM A53

Black and hot-hipped galvanized welded and seamless steel pipe

BS EN10217-2

Welded steel tybes for pressure purposes – delivery technical conditions – part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties

BS EN10217-5

Welded steel tybes for pressure purposes – delivery technical conditions – part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties

Steel Pipe for Ordinary Structure

GB/T 13793

Longitudinally electric resistance welded steel pipe

SY/T 5040

Spirally submerged arc welded steel pipe piles

ASTM A252

Welded and seamless steel pipe piles

BS EN10219-1

Cold formed welded structural hollow sections of non-alloy and fine grain steels – part1: Technical delivert conditions

BS EN10219-2

Cold formed welded structural hollow sections of non-alloy and fine grain steels – part2: tolerances dimmsions and sectional properties

Line Pipe

GB/T 9711.1

Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe)

GB/T 9711.2

Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe)

API 5L PSL1/2

Line pipe

Casing

API 5CT/ ISO 11960 PSL1

Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries

Product Application

Spiral welded pipes are mainly used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural use: as piling pipes, bridges; docks, roads, building structure pipes, etc.