GB/T 3091 Low-pressure Fluid LSAW Pipe
GB/T 3091 Low-pressure Fluid LSAW Pipe
GB/T 3091 Low-pressure Fluid LSAW Pipe

GB/T 3091 Low-pressure Fluid LSAW Pipe

Name: China GB/T 3091 Low-pressure Fluid LSAW Pipe Manufacturers Suppliers - GNEE Pipe
Brand: GNEE
SKU: 227606248

GB/T 3091 standard specifies the size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of welded steel pipe for low pressure fluid transfer, packaging, marking and quality certification.

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Inspection-Report-Of-LSAW-Pipe-converted.pdf

Product Introduction

Lsaw Pipe Manufacturers-GNEE

GB/T3091 Carbon Steel Pipe Description

GB/T3091 Welded steel pipe for low-pressure fluid transmission is generally also known as welded pipe, commonly known as black pipe. Is used to transport water, gas, air, oil and heating steam, and other general pressure fluid and other purposes of the welded steel pipe. The wall thickness of steel pipe is divided into ordinary steel pipe and thickened steel pipe; the form of the pipe end is divided into steel pipe without threads (light pipe) and steel pipe with threads. Steel pipe specifications with nominal caliber (mm), nominal caliber is an approximation of the internal diameter. Customarily used in inches, such as 11/2 and so on. Welded steel pipe for low-pressure fluid transport is used directly for transporting fluids in addition to a large number of low-pressure fluid transport galvanized welded steel pipes used as the original pipe.

GB/T 3091 Welded Steel Pipes for Low-Pressure Fluid Service Specification

Usage	Used for low-pressure liquid delivery, such as water, gas, and oil
Standard	API 5L,API5C,ASTM 53,EN10217,DIN 2458,IS 3589,GB/T3091,GB/T9711
Certificate	API 5L PSL1 PSL2, API5CT
Out Diameter	323.9mm-1820mm(12"-72'')
Wall Thickness	5.0 - 50mm
Length	6 - 12m
Steel Grade	API 5L: GR B.X42.X46X56.X60.X65.X70 ASTM A53 GRA GR B, GR C EN: S275 S275IR S355JRH S355J2H GB: Q195,0215 0235,0345,L175,L210 L245,L320 L360-L555
Surface	Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, and Black Oil coating as per the customer's requirement
Test	Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongaton), Technical Properties (Flattenimg Test, Bending Test, ray Test.

LSAW Pipe Tolerance of Outside Diameter and Wall Thickness

Standard	Tolerance of Pipe Body		Tolerance of Pipe End		Tolerance of Wall Thickness
Standard	Out Diameter	Tolerance	Out Diameter	Tolerance	Tolerance of Wall Thickness
GB/T3091	OD≤48.3mm	≤±0.5	OD≤48.3mm	-	≤±10%
	48.3	≤±1.0%	48.3	-
	273.1	≤±0.75%	273.1	-0.8～+2.4
	OD>508mm	≤±1.0%	OD>508mm	-0.8～+3.2

Chemical Composition Comparision of GB/T 3091 Carbon Pipe

Steel Grade	C	Si	Mn	P	S
S355	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025
S500MC	≤0.12	≤0.50	≤1.70	≤0.025	≤0.015
Q345B	≤0.20	≤0.50	≤1.70	≤0.035	≤0.035
Q235B	≤0.20	≤0.35	≤1.40	≤0.045	≤0.045

Mechenical Property Comparision of GB/T 3091 LSAW Welded Pipe

Steel Grade	Tensile strength	Yield strength	Elongation afrer fracture
S355	450-630Mpa	≥355MPa	21-22%
S500MC	550-700Mpa	≥500MPa	≥12%
Q345B	490-675Mpa	≥345Mpa	≥21%
Q235B	375-500Mpa	≥235Mpa	≥26%

GB/T 3091 Carbon Steel Tube

lsaw steel pipe lsaw welded pipe

GNEE Profile

GNEE Group was founded in 2008, covering an area of 35,000 square meters, with a total investment of US$20 million and more than 200 employees. The company has 5 straight seam high-frequency welded pipe production lines, 7 spiral double-sided submerged arc welded pipe production lines, and 4 anti-corrosion pipe production lines, with 600,000 tons of welded steel pipes annually. ERW steel pipes supplied by GNEE Group: Outer diameter: 21.3-610 mm Wall thickness: 0.5-22 mm Length: more than 18 meters (without adapter) SSAW steel pipes: Outer diameter: 219-3048 mm Wall thickness: 5.0-30 mm Length: 32 meters (excluding blockboard). If you need anything please feel free to contact us for a quote.