• SPHC Carbon Steel Square Pipe
  • SPHC Carbon Steel Square Pipe

Product Introduction

Square pipe is a name for square pipe, which is a steel pipe with equal side lengths. It is made of strip steel rolled through process treatment. Changing to square tubes: Generally, the strip steel is unpacked, flattened, curled, and welded to form a round tube, which is then rolled into a square tube and then cut to the required length.

Product Details

Product NameCarbon Welded Square pipe
StandardAPI, ASTM, DIN, GB, JIS, API 5L, ASTM A213-2001, ASTM A333-2005, ASTM A335-2006, DIN 17175, GB 3087-1999, GB 5310-1995, GB6479-2000, GB 9948-2006, GB/T 9711.2-1999, JIS G3458-2005
Grade10#-45#, API J55-API P110, Cr-Mo alloy, Q195-Q345, 20#, API J55, API K55, API L80, API N80, API P110, 10CrMo910, 12Cr1MoV, 12CrMo, 13CrMo44, 15CrMo, Q235
Welded TypeERW SAW EFW GMAW
Outside Dia(mm)10.3-1219mm
Wall Thickness(mm)1.5-30mm
LengthRandom length:5-12m
SurfaceBlack painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE,ect
PackagingLoose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps or as per requirement
Application1. Fluid pipe    2. Power Plant       3. Structure pipe     4. Conduit pipe        5. Scaffolding pipe pharmaceutical andship,building etc.
Advantages1. Reasonable price with excellent quality            2. Abundant stock and prompt delivery            3. Rich supply and export experience, sincere service



Mechanical properties of carbon steel square tubes

Strength refers to the ability of Q195 welded square tube materials to resist damage (moderate plastic deformation or breakage) under static load. Because the load acts in the form of tension, compression, bending, shearing, etc., the strength is also divided into tensile strength, compressive strength, flexural strength, shear strength, etc. There is often a certain relationship between various strengths. In application, tensile strength is generally used as the most basic strength indicator.

【1】Performance Index Analysis of Q195 Welded Square Pipe-Strength The load that acts on the machine parts at a large speed is called the impact load. The Q195 welded square pipe resists the power of damage under the action of the impact load, which is called the impact toughness.

【2】Function Index Analysis of Q195 Welded Square Pipe - Strength, Plasticity, and Angle discussed below are the performance indicators of metal under static load. In fact, many mechanical parts are repeatedly loaded with work. In this case, the parts will become tired.

【3】Function index analysis of Q195 welded square tube - Commonly used methods include Brinell angle (HB), Rockwell angle (HRA, HRB, HRC) and Vickers angle (HV) of Q195 welded square tube. The angle is the needle that measures the softness and hardness of metal materials. The most commonly used predetermined angle method in recent years is the indentation angle method, which uses an indenter of a certain geometric shape to press into the surface of the metal material being tested under a certain load, and the angle value is preset based on the degree of indentation.

【4】Performance index analysis of Q195 welded square pipe - Angle plasticity refers to the ability of Q195 welded square pipe material to undergo plastic deformation (permanent deformation) without destruction under load.

【5】Functional index analysis of Q195 welded square tube-mechanical function of plastic square tube


Carbon steel square pipe specification

1. 20*20mm - used in decoration, advertising, display racks and other architectural decoration fields.

2. 30*30mm - widely used in brackets, mechanical parts and manufacturing processes of various structures.

3. 40*40mm - suitable for manufacturing machinery, bicycle frames, steel sheds, shelves and other practical industrial products.

4. 50*50mm - widely used in various structures and their supports, conveyors, steel pallets and other industries.

5. 60*60mm - usually used in machinery manufacturing, automobile manufacturing, railways, aviation, shipping and other fields.

6. 80*80mm - suitable for manufacturing hydraulic supports, conveyors, metallurgical equipment and other industries.

7. 100*100mm - widely used in manufacturing large machinery, building structures, automobile chassis and other practical industrial products.

Characteristics and uses of carbon steel square tubes

1. Square tube product description

Square tube is a hollow square cross-section lightweight thin-walled steel tube, also known as steel cold-bent profile. It has good comprehensive mechanical properties, good weldability, cold and hot processing properties and corrosion resistance, and has good low-temperature toughness.

2. Purpose of square tube

Square tubes are used in construction, machinery manufacturing, steel construction and other projects, shipbuilding, solar power generation brackets, steel structure engineering


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