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Home » Products » Steel Pipe » Carbon Steel Pipe » Prime Quality ASTM A36/Q235B/Q345B/ST37 Carbon Steel Square SHS/Rectangular RHS Hollow Section Steel Tube 100*100 Sch40 Mild Steel Welded Square Pipe For Construction MS Iron Black ERW Structural Pipe

Prime Quality ASTM A36/Q235B/Q345B/ST37 Carbon Steel Square SHS/Rectangular RHS Hollow Section Steel Tube 100*100 Sch40 Mild Steel Welded Square Pipe For Construction MS Iron Black ERW Structural Pipe

This is a general structure square and rectangular low carbon welded steel tube, also known as general structure square and rectangular carbon steel tube. It is made of high quality carbon steel plate as raw material, and is processed into a square or rectangle shape by precision forging and welding technology. The surface is smooth and has good straightness and roundness. It is mainly used as structural material in building, bridge, transportation and other fields, and is a kind of energy-saving and environmental-friendly material with low cost and wide application.
Material:
Section Shape:
Process Technique:
Processing Service:
Surface:
Specification:
Application:
Availability:
Quantity:
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  • A36/Q235B/Q345B/S235JR/ST37

  • HONGKUN

  • 73041990

square and rectangular pipe


Square And Rectangular Tube General Introduction:

Carbon steel pipe is produced from carbon steel, with carbon content of about 0.05% ~ 1.35%. The most commonly used iron pipe belongs to carbon steel pipe, which are then hot-rolled and cold-rolled. Carbon steel pipes play an important role in China's steel pipe industry. It has high strength, toughness, and corrosion resistance. Carbon steel pipes have good weldability and can be connected using various welding methods.

It is widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton and steel structure, engineering construction, door and window decoration, guardrail, automobile manufacturing, home appliance manufacturing, shipbuilding, container manufacturing, electric power, motorcycle frame, shelf, fitness equipment, etc.


COMMODITY NAME
SQUARE AND RECTANGULAR HOLLOW SECTION PIPE/ TUBE
MATERIAL GRADE
Q195 = S195 / A53 Grade A
Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2
Q355 = S355JR / A500 Grade B Grade C
STANDARD
ASTM A500 Gr.A / B/ C
PIPE SURFACE
Galvanized, black painted, or anti-rust oiled
PIPE ENDS
PLAIN ENDS
CERTIFICATES
ISO 9001 / BSI/ UL / FM
TRADE TERMS
FOB/ CFR/ CIF/ EXW/ FCA
PAYMENT TERMS
30%&70% T/T ;  100% LC AT SIGHT (others can be negotiated)
DELIVERY TIME
30-45 DAYS AFTER RECEIVE DEPOSIT OR LC
HOT SALES MARKET
Southeast Asia, South Asia, Middle East, Europe, Middle&South America, Africa and Oceania
REGULAR  SIZE
SIZE (OUTER DIAMETER)
WALL THICKNESS
LENGTH
20x20 / 25x25
1.2MM --2.75MM
6M IN STOCK (OR CUSTOMIZED)
30x30 / 20x40 / 30x40 / 25x40
1.2MM -- 3.5MM
6M IN STOCK (OR CUSTOMIZED)
40x40 / 50x50
30x50 / 25x50 / 30x60 / 40x60
1.2MM -- 4.75 MM
6M IN STOCK (OR CUSTOMIZED)
60x60 / 50x70 / 40x80 / 40x50
1.2 MM -- 5.75 MM
6M IN STOCK (OR CUSTOMIZED)
70x70 / 60x80 / 50x80 / 100x40 / 50x90
1.5MM -- 5.75 MM
6M IN STOCK (OR CUSTOMIZED)
75x75 / 80x80 / 90x90
60x100 / 50x100 / 120x60 / 100x80 / 60x90
1.5MM -- 7.75 MM
6M IN STOCK (OR CUSTOMIZED)
100x100 / 120x80
1.8MM -- 7.75 MM
6M IN STOCK (OR CUSTOMIZED)
120x120 / 130x130
180x80 / 160x80 / 100x150 / 140x80 / 140x60
2.5MM -- 10.0 MM
6M IN STOCK (OR CUSTOMIZED)
140x140 / 150x150 / 100x180 / 200x100
2.5MM -- 10.0 MM
6M IN STOCK (OR CUSTOMIZED)
160x160 / 180x180 / 200x150
3.5MM -- 11.0 MM
6M IN STOCK (OR CUSTOMIZED)
200x200 / 250x150 / 100x250
3.5MM -- 11.0 MM
6M IN STOCK (OR CUSTOMIZED)
250x250 / 250x200 / 300x150 / 300x200
4.5MM -- 15.0 MM
6M IN STOCK (OR CUSTOMIZED)
300x300 / 350x200 / 350x250 /300x150
4.5MM -- 15.0 MM
6M IN STOCK (OR CUSTOMIZED)
350x350
350x300 / 450x250 / 400x300 / 500x200
4.5MM -- 15.75 MM
6M IN STOCK (OR CUSTOMIZED)
400x400 / 280x280
450x300 / 450x200 / 400x350 / 400x250 / 500x250 / 500x300
4.5MM -- 15.75 MM
6M IN STOCK (OR CUSTOMIZED)
ASTM A53 /A106 Chemical Components and Machanical Property
Standard Steel Grade Chemical Components Machanical Property
C Mn P S Cu Ni Cr Mo V Tensile Strength (Mpa) Yield Strength(Mpa) Elongation (Mpa)
ASTM A53 A ≤0.25 ≤0.95 ≤0.05 ≤0.045 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08 ≥330 ≥205 ≥29.5
B ≤0.30 ≤1.20 ≤0.05 ≤0.045 ≤0.40 ≤0.40 ≤0.40 ≤0.15 ≤0.08 ≥415 ≥240 ≥29.5
Standard Steel Grade Chemical Components Machanical Property
C Si Mn P S Cu ,Ni Cr Mo V Tensile Strength (Mpa) Yield Strength(Mpa) Elongation (Mpa)
ASTM A106 B ≤0.30 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15 ≤0.08 ≥415 ≥240 ≥30
C ≤0.35 ≥0.10 0.29-1.06 ≤0.035 ≤0.035 ≤0.40 ≤0.40 ≤0.15 ≤0.08 ≥485 ≥275 ≥30

square and rectangular tube

square tube process



Carbon Steel Square And Rectangular Tube Display:

RHS SHS1

RHS and SHS1

inspection

SHS RHS Production line



Product Application:

It is used in engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, home appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle frame, motorcycle frame, shelf, fitness equipment, leisure and tourism supplies, steel furniture, various specifications of oil casing, oil pipe and pipeline pipe, water, gas, sewage, air, heating and other fluid transportation Fire fighting and support, construction industry, etc.


application1

application

pipe application


Product Packing And Shipping:


1. Size 200x200 mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles


2. above size 200x200 mm in pieces or according to custom opinion


3. 25 tons/container and 5 tons/size for a trial order;


4. For 20" container the max length is 5.8m;


5. For 40" container the max length is 11.8m.

packing and shipping


Order our Carbon Steel Square and Rectangular Tube today and experience the unmatched quality and reliability it offers. Trust in our cross-border e-commerce platform to deliver this exceptional product right to your doorstep, ensuring a seamless buying experience.


Any questions or requirements, pls don't hesitate to contact us and we will supply you the best service at any time.




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