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Structural Steel Pipe

2021-12-03 14:47:28
139次
Structural Steel Pipe
Details:

Production Process of Structural Steel Pipe

The structure steel pipe has hot - rolled seamless steel tube and welded steel tube.The seamless steel tube for structure is divided into two types according to the provisions of "seamless steel tube for structure" (GB/ t8162-2008) : hot rolling (extrusion, expansion) and cold drawing (rolling).The outer diameter of hot-rolled steel pipe is 32-630mm and the wall thickness is 2.5-75mm.The outer diameter of cold-drawn steel pipe is 5-200mm and the wall thickness is 2.5-12mm.Welded steel pipe is made of steel plate or steel strip after crimping and forming, which can be divided into straight welded steel pipe and spiral welded steel pipe.The outer diameter and wall thickness of the direct-welded steel pipe are 5-508mm and 0.5-12.7mm respectively, which shall comply with the provisions of GB/ t3793-2008.The welded steel pipe for low-pressure fluid transportation is also called common welded pipe, commonly known as clarkpipe. The specification is expressed in mm of nominal diameter, which should comply with the provisions of GB/ t3091-2008 for low-pressure fluid transportation.

Specification of Structural Steel Pipe

OD: 88.9mm ~ 660mm

WT: 3mm ~ 17.5mm

LENGTH: 0.5mtr ~ 22mtr (5.8/6/11.8/12 meters, SRL, DRL)

Chemical Composition

GradeCMnPSSiCrMo
10100.08-0.130.30-0.60≤0.04≤0.05---
10200.08-0.230.30-0.60≤0.04≤0.05---
10450.43-0.500.60-0.90≤0.04≤0.05---
41300.28-0.330.40-0.60≤0.04≤0.050.15-0.350.80-1.100.15-0.25
41400.38-0.430.75-1.00≤0.04≤0.050.15-0.350.80-1.100.15-0.25

Mechanical Properties

GradeConditionTensile strength Mpa(min)Yield stength Mpa(min)Elongation %(min)
1020CW4144835
SR34544810
A19333130
N23437922
1025CW4485175
SR3794838
A20736525
N24837922
4130SR58672410
A37951730
N41462120
4140SR68985510
A41455225
N62185520

Packing of Structural Steel Pipe

Bundled/In Bulk, Plastic Caps plugged, Waterproof Paper wrapped

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