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rectangular steel tube

About Us

We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.

Products

Welded Steel Pipe

Welded steel pipe, also known as welded pipe, is a steel pipe made of steel plate or steel strip after being crimped and welded. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications.Welded steel pipes for low-pressure fluid transportation (API 5L) are also known as general welded pipes, commonly known as black pipes. Welded steel pipe for conveying general lower pressure fluids such as water, gas, air, oil and heating steam and other purposes. Super Steel Manufacturing can offer SAWL/LSAW Steel Pipe, SSAW Steel Pipe, EFW/ERW Steel Pipe in standard size or as customer’s requirement.

Seamless Steel Pipe

Seamless pipe made of a single piece of metal with no seams on the surface is called a seamless steel pipe. According to the production method, the seamless pipe is divided into a hot rolled pipe, a cold rolled pipe, a cold drawn pipe, an extruded pipe, a top pipe, and the like. According to the shape of the section, the seamless steel pipe is divided into two types: a circular shape and an irregular shape, and the shaped pipe has a square shape, an elliptical shape and the like. The maximum diameter is 650mm and the minimum diameter is 0.3mm. Seamless steel pipe is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural steel pipe for automobile, tractor and aviation.

ASTM A53 Seamless Pipe

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Hollow Section

A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The steel hollow section is made up of various material welded structural hollow sections for multiple purposes. No matter building construction, or spare parts manufacturing, even working parts construction. It is also used in these projects. Here are products Mild Steel Square Tube, Mild Steel Rectangular Tube, Stainless Steel Square Tube, Stainless Steel Rectangular Tube.

Circular Hollow Sections

Rectangular Tube

Square steel tube

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Coated Steel Pipe

Coated steel pipe means the pipe that is by the processing after the corrosion, which can effectively prevent or slow the steel pipe occurs in the course of transport and chemical or electrochemical reaction corrosion phenomena. Coated steel pipe can effectively prevent or slow down the corrosion of steel pipes to extend service life and reduce operating costs pipe. Super Steel Manufacturing is a supplier that can offer Galvanized Steel Pipe, FBE Coated Pipe, Epoxy Coated Pipe, 3LPE/3PE Coated Pipe.

3PE Steel Pipe

Epoxy Coating Pipe

FBE Coating Pipe

Galvanized Steel Pipe

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OCTG Pipe

Oilfield tubular goods of Surper Steel is a collection of seamless rolled products consisting of Tubing and Casing, Slotted Pipe, Drill Pipe and Drill Collar, Pup Joint and Coupling, which are useful in the oil and gas production activities. These OTCG products are manufactured according to the specifications set by API. OCTG can be either seamless or welded and are available in different sizes and lengths.

Stainless Steel Pipe

Stainless steel pipe is used for transporting liquids and gasses in a wide range of industries including mining, oil, natural gas, automotive, and aviation. Super Steel can provide Stainless Seamless Steel Pipe, Stainless Welded Steel Pipe, Stainless Steel Screen Pipe and Stainless Hollow Section in standard sizes, or you can have it custom cut to your specifications.

Stainless Seamless Steel Pipe

Stainless Welded Steel Pipe

316L Stainless Steel Pipe and Tube

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Alloy Steel Pipe

Alloy steel pipe is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this steel pipe inside containing Cr, high temperature resistance, low temperature, corrosion-resistant performance of other non-pipe joints not match, so the more extensive use of alloy tube in the petroleum, aerospace, chemical, electric power, boiler, military, and other industries.

Copper-Nickel Pipe/Tube

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Finned Steel Tube

Fin tubes are a type of heat exchanger that is used in many different industries. These tubes have a finned surface, which increases their surface area and allows them to transfer heat more efficiently. This makes them ideal for applications where high heat transfer rates are required, such as in power plants and refrigeration systems. Fin tubes are made from a variety of materials, including copper, aluminum, and stainless steel. They are available in a range of sizes and shapes and can be customized to meet the specific needs of each application.

Finned Steel Tube

Studded Tube

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Pipe Fittings

Pipe Fittings are defined as the piping components that help in pipe routing for directional changes, size changes, and branch connections. Super Steel is one of the top supplier of Flange, Elbow / Reducer / Tee / Cap / Bend and Valves, which are widely used in both the piping and plumbing industries.

Steel structure

Steel plates normally stand for steel plates 6mm or thicker and are made by hot-rolling a semiproduct slab 200mm or thicker and then through follow-up processes such as cooling or heat treatment. Steel plates ramify into products for general structure, welding, boiler or large-diameter steel pipes depending on material. Super Steel Manufacturing can offer Steel structure Alloy Steel Plate, Carbon Steel Plate, Nickel Alloy Sheet/Plate, Stainless Steel Plate,C Channel, H/I Beam,Steel Bar.

Steel Structure Fabrication

Structural steel fabrication refers to the process of manufacturing structures by bending, cutting, and shaping steel. In structural steel fabrication, steel components are typically assembled to form different structures of predetermined dimensions and shapes.

Building Construction Steel Truss Structure

Box Steel Components

Stud Welded Steel Column Structure

H Beam Steel Component

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Workshop

High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.

Projects

Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.

Services

Super Steel Manufacturing Co.,Ltd(SMC) adheres to the principle of being customer-oriented, focusing on customers and meeting their requirements. We respond quickly and customize products and solutions for end users.

News

Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.

Hollow Section

Rectangular Tube

Rectangular Hollow Section Steel Tube Size:
**OD: 20mm10mm ~ 400mm300mm
Pipe Standard:ASTM A53, ASTM A500,BS EN 10219,JIS G 3466, ASTM A513, ASTM A36;S235JR,S355JR,Q235,St37,St37-2,St52,SS400, STK500,
Furface:Black bared ,can be galvanized,oiled,painted,powdered.
Packing:Waterproof plastic bag,bundle with strip
Application:Widely used in furniture,interior decoration, structure
Furface:Black bared ,can be galvanized,oiled,painted,powdered.
Packing:Waterproof plastic bag,bundle with strip**

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Description
Specification
Standard
Process
Packing

Description

Cold Formed Rectangular Hollow Section Specification
Standard : BS EN 10219 - Cold Formed Welded Structural Hollow Sections of Non-alloy and Fine Grain Steels
RHS Sizes: 40mm*20mm - 240*120mm
Wall Thickness : 1.6mm-16.0mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

Hot Finish Rectangular Hollow Section Specification
Standard : BS EN 10210 - Hot Finished Structural Hollow Sections of Non-alloy and Fine Grain Steels
Sizes : 300x200 mm
Wall Thickness : 0.5mm - 25mm
Length : 6000-14000 mm
Type : Seamless/ Welded / ERW
Dimensional Tolerances : Thickness : (All sizes +/- 10%)
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Grades : S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355J2+N, IS 4923 / ASTM A500 / As Per Requirement
Surface Protection: Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized

SS Rectangular Hollow Section Specification
Specifications : ASTM A554 / ASME SA554
Sizes : 10mm x 20mm to 150 x 300mm, other non standard sizes available on request
Wall Thickness : 0.5mm - 25mm
Length : Up to 6 meters, custom cut lengths
Type : Seamless/ Welded / ERW
Packing : In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or rectangular cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Available Steel Grades : 304, 304L, 304H, 316, 316L, 316H, 316Ti, 321, 321H, 310S, 202, 409, 409L /

Specification

Rectangular Pipe sizes

Size (mm)	Wall Thickness (mm)	Size (mm)	Wall Thickness (mm)
20*20	1.2	7070 6080 100*40	1.8
	1.3		2
	1.4-1.5		2.2
	1.7		2.3
	1.8		2.5-4.0
	2		4.5-5.0
	2.2		5.5-5.75
	2.3	7575 6090 100*50	1.8
	2.5-2.75		2
2525 2030	1.2		2.2
	1.3		2.3
	1.5		2.5-4.0
	1.7		4.5-5.0
	1.8		5.5-5.75
	2	8080 10060 10080 12060	2
	2.3-2.3		2.2
	2.5-3.0		2.3
3030 3040 2540 2040	1		2.5-4.0
	1.2		4.5-5.0
	1.3		5.5-5.75
	1.5		7.5-7.75
	1.7	100100 12080	2
	1.8		2.2
	2		2.3
	2.2		2.5-5.0
	2.3		5.5-5.75
	2.5*2.75		7.5-7.75
	3	120120 14080 150100 16080	2.5
4040 3050 25*50	1.2		2.75
	1.3		3
	1.4-1.5		3.25-5.0
	1.7		5.5-7.0
	1.8		7.5-7.75
	2	140140 150150 200*100	3.5-4.0
	2.2-2.3		4.5-5.0
	2.5-4.0		5.25-7.0
5050 6040 3060 4050	1.5		7.5-7.75
	1.7	160160 180180	3
	1.8		3.5
	2		3.75
	2.2		4.0-5.0
	2.3		5.25-5.75
	2.5*-4.0		7.5-7.75
	4.25-5.0	6060 4080 7575 5070 50*80	2.3
6060 4080 7545 5070 50*80	1.5		2.5-4.0
	1.7		4.25-5.0
	1.8		5.5-5.75
	2		/
	2.2-2.3		/

Standard

Chemical composition of material

Grade	element	C	Mn	P	S
ASTM A500 Gr.b	%	0.05%-0.23%	0.3%-0.6%	0.04%	0.04%

Acc.to EN10027/1	Acc.to EN10027/2	C% max (Norminal W.T.(mm)		Si% max	Mn% max	P% max	S% max	N% max
and IC 10		≤ 40		Si% max	Mn% max	P% max	S% max	N% max
S235JRH	1.0039	0.17	0.20	-	1.40	0.045	0.045	0.009
S275JOH	1.0149	0.20	0.22	-	1.50	0.040	0.040	0.009
S275J2H	1.0138	0.20	0.22	-	1.50	0.035	0.035	-
S355JOH	1.0547	0.22	0.22	0.55	1.60	0.040	0.040	0.009
S355J2H	1.0576	0.22	0.22	0.55	1.60	0.035	0.035	-

Mechanical properties of material

Grade	Yield Strength	Tensile Strength	Elongation
A500.Gr.b	46 ksi	58 ksi	23%
A513.GR.B	72 ksi	87 ksi	10%

Norm		Yield Strength			Tensile Strength		Min.elogation				Min.percent properties
Acc.to EN10027/1 and IC 10	Acc.to EN10027/2	Norminal W.T.mm			Norminal W.T.mm		Longit.		Cross		Test temperature°C	Average min.impact value
		≤16	>6	>40	<3	≤3≤65	Norminal W.T.mm
			≤65	≤65			≤40	>40	>40	≤65
			≤65	≤65			≤40	≤65	≤40	≤65
S253JRH	1.0039	235	225	215	360-510	340-470	26	25	24	23	20	27
S275JOH	1.0149	275	265	255	410-580	410-560	22	21	20	19	0	27
S275J2H	1.0138	275	265	255	430-560	410-560	22	21	20	19	-20	27
S355JOH	1.0547	355	345	335	510-680	490-630	22	21	20	19	0	27
S355J2H	1.0576	355	345	335	510-680	490-630	22	21	20	19	-20	27

Equivalent specfications

EN 10210-1	NF A 49501 NF A 35501	DIN 17100 DIN 17123/4/5	BS 4360	UNI 7806
S235JRH	E 24-2	St 37.2	–	Fe 360 B
S275JOH	E 28-3	St 44.3 U	43 C	Fe 430 C
S275J2H	E 28-4	St 44.3 N	43 D	Fe 430 D
S355JOH	E 36-3	St 52.3 U	50 C	Fe 510 C
S355J2H	E 36-4	St 52.3 N	50 D	Fe 510 D
S275NH	–	St E 285 N	–	–
S275NLH	–	TSt E 285 N	43 EE	–
S355NH	E 355 R	St E 355 N	–	–
S355NLH	–	TSt E 355 N	50 EE	–
S460NH	E 460 R	St E 460 N	–	–
S460NLH	–	TSt E 460 N	55 EE	–

Process

Packing

Specification

Rectangular Pipe sizes

Size (mm)	Wall Thickness (mm)	Size (mm)	Wall Thickness (mm)
20*20	1.2	7070 6080 100*40	1.8
	1.3		2
	1.4-1.5		2.2
	1.7		2.3
	1.8		2.5-4.0
	2		4.5-5.0
	2.2		5.5-5.75
	2.3	7575 6090 100*50	1.8
	2.5-2.75		2
2525 2030	1.2		2.2
	1.3		2.3
	1.5		2.5-4.0
	1.7		4.5-5.0
	1.8		5.5-5.75
	2	8080 10060 10080 12060	2
	2.3-2.3		2.2
	2.5-3.0		2.3
3030 3040 2540 2040	1		2.5-4.0
	1.2		4.5-5.0
	1.3		5.5-5.75
	1.5		7.5-7.75
	1.7	100100 12080	2
	1.8		2.2
	2		2.3
	2.2		2.5-5.0
	2.3		5.5-5.75
	2.5*2.75		7.5-7.75
	3	120120 14080 150100 16080	2.5
4040 3050 25*50	1.2		2.75
	1.3		3
	1.4-1.5		3.25-5.0
	1.7		5.5-7.0
	1.8		7.5-7.75
	2	140140 150150 200*100	3.5-4.0
	2.2-2.3		4.5-5.0
	2.5-4.0		5.25-7.0
5050 6040 3060 4050	1.5		7.5-7.75
	1.7	160160 180180	3
	1.8		3.5
	2		3.75
	2.2		4.0-5.0
	2.3		5.25-5.75
	2.5*-4.0		7.5-7.75
	4.25-5.0	6060 4080 7575 5070 50*80	2.3
6060 4080 7545 5070 50*80	1.5		2.5-4.0
	1.7		4.25-5.0
	1.8		5.5-5.75
	2		/
	2.2-2.3		/

Standard

Chemical composition of material

Grade	element	C	Mn	P	S
ASTM A500 Gr.b	%	0.05%-0.23%	0.3%-0.6%	0.04%	0.04%

Acc.to EN10027/1	Acc.to EN10027/2	C% max (Norminal W.T.(mm)		Si% max	Mn% max	P% max	S% max	N% max
and IC 10		≤ 40		Si% max	Mn% max	P% max	S% max	N% max
S235JRH	1.0039	0.17	0.20	-	1.40	0.045	0.045	0.009
S275JOH	1.0149	0.20	0.22	-	1.50	0.040	0.040	0.009
S275J2H	1.0138	0.20	0.22	-	1.50	0.035	0.035	-
S355JOH	1.0547	0.22	0.22	0.55	1.60	0.040	0.040	0.009
S355J2H	1.0576	0.22	0.22	0.55	1.60	0.035	0.035	-

Mechanical properties of material

Grade	Yield Strength	Tensile Strength	Elongation
A500.Gr.b	46 ksi	58 ksi	23%
A513.GR.B	72 ksi	87 ksi	10%

Norm		Yield Strength			Tensile Strength		Min.elogation				Min.percent properties
Acc.to EN10027/1 and IC 10	Acc.to EN10027/2	Norminal W.T.mm			Norminal W.T.mm		Longit.		Cross		Test temperature°C	Average min.impact value
		≤16	>6	>40	<3	≤3≤65	Norminal W.T.mm
			≤65	≤65			≤40	>40	>40	≤65
			≤65	≤65			≤40	≤65	≤40	≤65
S253JRH	1.0039	235	225	215	360-510	340-470	26	25	24	23	20	27
S275JOH	1.0149	275	265	255	410-580	410-560	22	21	20	19	0	27
S275J2H	1.0138	275	265	255	430-560	410-560	22	21	20	19	-20	27
S355JOH	1.0547	355	345	335	510-680	490-630	22	21	20	19	0	27
S355J2H	1.0576	355	345	335	510-680	490-630	22	21	20	19	-20	27

Equivalent specfications

EN 10210-1	NF A 49501 NF A 35501	DIN 17100 DIN 17123/4/5	BS 4360	UNI 7806
S235JRH	E 24-2	St 37.2	–	Fe 360 B
S275JOH	E 28-3	St 44.3 U	43 C	Fe 430 C
S275J2H	E 28-4	St 44.3 N	43 D	Fe 430 D
S355JOH	E 36-3	St 52.3 U	50 C	Fe 510 C
S355J2H	E 36-4	St 52.3 N	50 D	Fe 510 D
S275NH	–	St E 285 N	–	–
S275NLH	–	TSt E 285 N	43 EE	–
S355NH	E 355 R	St E 355 N	–	–
S355NLH	–	TSt E 355 N	50 EE	–
S460NH	E 460 R	St E 460 N	–	–
S460NLH	–	TSt E 460 N	55 EE	–