LSAW Steel Pipe

Products > Welded Steel Pipe > LSAW Steel Pipe

LSAW Steel Pipe

Product details

Introduction

Longitudinally Submerged Arc Welding Pipe is subdivided into UOE, RBE, JCOE steel pipe according to its different forming methods. Longitudinal high-frequency welded steel pipe has the characteristics of relatively simple process and fast continuous production, and has wide use in civil construction,petrochemical, light industry and other sectors. Mostly used to transport low pressure fluids or made into various engineering components and light industrial products.

When compared UOE vs JCOE pipes, LSAW steel pipe manufacturers in China can produce more sizes as:

Outside Diameter:219mm-1625mm;

Wall Thickness: 6.35 mm – 60 mm;

Length: 2 m – 18 m

From this, we can see that the LSAW pipe having superiority. PMC Steel offers LSAW pipe with high quality, competitive prices, and best service.

Standard

ASTM A53	Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
API 5L	Specification for Line Pipe(Two levels PSL 1 and PSL 2 of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.)
A252	Standard Specification for Welded and Seamless Steel Pipe Piles
A500	Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
A139	Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
A672	Specification for Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
A691	Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures

Types	Standard
Types	SY/T5040-2000	SY/T5037-2000	SY/T9711.1-1977	ASTM A252	AWWA C200-97	API 5L PSL1
Tube end OD deviation	±0.5%D	±0.5%D	-0.79mm～+2.38mm	<±0.1%T	<±0.1%T	±1.6mm
Wall thickness	±10.0%T	D<508mm, ±12.5%T	-8%T～+19.5%T	<-12.5%T	-8%T～+19.5%T	5.0mm<t<15.0mm, ±0.11<="" p="" style="padding: 0px; margin: 0px; user-select: text !important;">
Wall thickness	±10.0%T	D>508mm, ±10.0%T	-8%T～+19.5%T	<-12.5%T	-8%T～+19.5%T	T≥15.0mm, ±1.5mm

Manufacturing Process

Plate edge milling machine
The milling machine mills the two sides of the plate to exacting standards in order to meet width, edging and groove shape specifications.

Edge crimping machine
The crimping machine crimps the edges of the plate to form the required curvature.

Tack welding machine
The two edges of the open seam pipe are brought together by the tack welding machine. then welded by the tack welder using a metal active - gas arc welding("MAG" )process.

Forming machine
Utilizes the "JCO" process to bend and form the crimped steel plate into a steel pipe.

Interior welding machine
The interior longitudinal seam of the pipe is welded from the inside by fixing 4 welding heads while moving pipe and using submerged-arc welding process.

End facing machine
The machine levels the pipe end with rotating cutter heads to ensure that required groove and edge specifications are met.

Hydrostatic tester
Using end face sealing technology eliminates blind zones during hydrostatic testing. The tester is also equipped with automatic recording and storing functions.

Inspection

Chemical Component Analysis
Mechanical Properties – Elongation, Yield Strength, Ultimate Tensile Strength
Technical Properties – DWT Test, Impact Test, Blow Test, Flattening Test
X-ray Test
Exterior Size Inspection
Hydrostatic Test
UT Test