Square Tubing-Welded Structural Grade Steel Square Tubing

• Customization: Available
• After-sales Service: 24 Hours Online Service
• Warranty: 24 Months
• Type: Seamless/ Welded
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
• Section Shape: Square
• Transport Package: Bundling
• Trademark: PMC
• Origin: China

Product Description

 

Permanent Steel Manufacturing Co.,Ltd (PMC) is your premium supplier and processor of specialty seamless steel pipe, hollow section,high temperature/low temperature steel pipe & fittings - in multiple product forms, including steel plate, bar, tubular and structural forms. In the past, we have been assiduously surpassing our goals step by step in the carbon steel industry. Over the years, perseverance and ardor in our work helped us to carve out a path of success for us and our venerated clients.With state-of-the-art manufacturing processes, contemporary technologies,and proficient services, we consider: offering finest quality-best in class products-at the most advantageous rates, as our forte. 

 

 

 

Hollow section members can be circular, square, or rectangular sections, although other shapes are available, such as elliptical. Hollow section is only composed of structural steel per code.These sections are available with anti rust oil coating from inside & outside to ensure safe delivery to end customers.

Square Tube

Standard: 

ASTM A500 Grade B,

ASTM A513 (1020-1026)

ASTM A36 (A36)

EN 10210:S235,S355,S235JRH,

S355J2H,S355NH
EN 10219:S235,S355,S235JRH, 

S275J0H, S275J2H, S355J0H, S355J2H

 

Surface conditions:

Hot rolled

Cold rolled

Ms Square tube sizes(It can be customized according to customer requirements)

Size by Inch  (diameter)	Thickness	Sizes by MM  (diameter)	Thickness
inch	inch	mm	mm
1/2" x 1/2"	0.065"	16mm×16mm	0.4mm~1.5mm
3/4" x 3/4"	0.049"	18mm×18mm	0.4mm~1.5mm
	0.065"	20mm×20mm	0.4mm~3mm
	0.083"	22mm×22mm	0.4mm~3mm
	0.120"	25mm×25mm	0.6mm~3mm
1" x 1"	0.049"	30mm×30mm	0.6mm~4mm
	0.058"	32mm×32mm	0.6mm~4mm
	0.065"	34mm×34mm	1mm~2mm
	0.072"	35mm×35mm	1mm~4mm
	0.083"	38mm×38mm	1mm~4mm
	0.095"	40mm×40mm	1mm~4.5mm
	0.109"	44mm×44mm	1mm~4.5mm
	0.120"	45mm×45mm	1mm~5mm
1 1/8" x 1 1/8"	0.035"	50mm×50mm	1mm~5mm
	0.049"	52mm×52mm	1mm~5mm
	0.065"	60mm×60mm	1mm~5mm
	0.109"	70mm×70mm	2mm~6mm
	0.120"	75mm×75mm	2mm~6mm
1 1/4" x 1 1/4"	0.049"	76mm×76mm	2mm~6mm
	0.065"	80mm×80mm	2mm~8mm
	0.072"	85mm×85mm	2mm~8mm
	0.083"	90mm×90mm	2mm~8mm
	0.109"	95mm×95mm	2mm~8mm
	0.120"	100mm×100mm	2mm~8mm
	0.135"	120mm×120mm	4mm~8mm
	0.156"	125mm×125mm	4mm~8mm
	0.188"	130mm×130mm	4mm~8mm
1 1/2" x 1 1/2"	0.049"	140mm×140mm	6mm~10mm
	0.065"	150mm×150mm	6mm~10mm
	0.072"	160mm×160mm	6mm~10mm
	0.083"	180mm×180mm	6mm~12mm
	0.109"	200mm×200mm	6mm~30mm
	0.120"	220mm×220mm	6mm~30mm
	0.140"	250mm×250mm	6mm~30mm
	0.188"	270mm×270mm	6mm~30mm
	0.250"	280mm×280mm	6mm~30mm
1 3/4" x 1 3/4"	0.065"	300mm×300mm	8mm~30mm
	0.083"	320mm×320mm	8mm~30mm
	0.095"	350mm×350mm	8mm~30mm
	0.109"	380mm×380mm	8mm~30mm
	0.120"	400mm×400mm	8mm~30mm
	0.188"	420mm×420mm	10mm~30mm
2" x 2"	0.049"	450mm×450mm	10mm~30mm
	0.065"	480mm×480mm	10mm~30mm
	0.083"	500mm×500mm	10mm~30mm
	0.109"	550mm×550mm	10mm~40mm
	0.120"	600mm×600mm	10mm~40mm
	0.145"	700mm×700mm	10mm~40mm
	0.165"	800mm×800mm	10mm~50mm
	0.188"	900mm×900mm	10mm~50mm
	0.250"	1000mm×1000mm	10mm~50mm
	0.312"
2 1/4" x 2 1/4"	0.188"
	0.250"
2 1/2" x 2 1/2"	0.083"
	0.109"
	0.120"
	0.188"
	0.250"
	0.312"

11

3" x 3"	0.083"
	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
3 1/2" x 3 1/2"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
4" x 4"	0.083"
	0.120"
	0.156"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"

 

4 1/2" x 4 1/2"	0.188"
	0.250"
	0.312"
	0.375"
5" x 5"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
6" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
7" x 7"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"

8" x 8"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
9" x 9"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10" x 10"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 12"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
14" x 14"	0.312"
	0.375"
	0.500"
	0.625"
16" x 16"	0.312"
	0.375"
	0.500"
	0.625"

 

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
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	≤40
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	-

- block letter "S" means "STEEL FOR STRUCTURAL APPLICATIONS"
- the next fi gure means the minim. yield value required for wall thickness ≤16 mm
- "J2" means impact test value -20° C min. 27 joule
- block letter "H" means "HOLLOW SECTION".
 

Rectangular Tube:
 

Standard: 

ASTM A500 Grade B,

ASTM A513 (1020-1026)

ASTM A36 (A36)

EN 10210:S235,S355,S235JRH,

S355J2H,S355NH
EN 10219:S235,S355,S235JRH, 

S275J0H, S275J2H, S355J0H, S355J2H

 

Surface conditions:

Hot rolled

Cold rolled

MS Rectangular tube sizes (It can be customized according to customer requirements)

Size by Inch  (diameter)	Thickness	Sizes by MM  (diameter)	Thickness
inch	inch	mm	mm
1" x 1/2"	0.065"	10mm×15mm	0.6mm~1.5mm
1" x 3/4"	0.065"	10mm×20mm	0.6mm~1.5mm
	0.095"	14mm×21mm	0.6mm~1.5mm
1 1/4" x 3/4"	0.065"	15mm×30mm	0.6mm~1.5mm
1 1/2" x 3/4"	0.065"	15mm×38mm	0.6mm~1.5mm
	0.120"	20mm×20mm	0.6mm~2mm
1 1/2" x 1"	0.065"	20mm×30mm	0.6mm~2mm
	0.072"	20mm×40mm	0.6mm~2mm
	0.083"	20mm×50mm	0.6mm~2mm
	0.120"	22mm×35mm	0.6mm~2mm
2" x 1"	0.065"	25mm×40mm	0.9mm~2mm
	0.083"	25mm×65mm	0.9mm~3.75mm
	0.120"	30mm×20mm	1mm~2mm
	0.188"	30mm×40mm	1mm~3.75mm
2" x 1 1/4"	0.065"	30mm×45mm	1mm~3.75mm
	0.083"	30mm×50mm	1mm~3.75mm
2" x 1 1/2"	0.083"	30mm×60mm	1mm~4mm
	0.120"	40mm×25mm	1mm~4.5mm
2 1/2" x 1 1/2"	0.072"	40mm×50mm	1mm~4.5mm
	0.083"	40mm×60mm	1mm~4.5mm
	0.120"	40mm×80mm	1mm~5mm
	0.148"	40mm×100mm	1mm~5mm
	0.188"	50mm×25mm	2mm~5mm
	0.250"	50mm×30mm	2mm~5mm
3" x 1"	0.083"	50mm×60mm	2mm~5mm
	0.120"	50mm×80mm	2mm~5mm
	0.188"	50mm×100mm	2mm~5mm
3" x 1 1/2"	0.083"	60mm×30mm	2mm~6mm
	0.120"	60mm×40mm	2mm~6mm
	0.188"	60mm×80mm	2mm~6mm
	0.250"	70mm×50mm	2mm~6mm
3" x 2"	0.065	80mm×30mm	2mm~8mm
	0.083	80mm×40mm	2mm~8mm
	0.125	80mm×60mm	2mm~8mm
	0.188	80mm×100mm	2mm~8mm
	0.250	100mm×50mm	2mm~8mm
3" x 2"	0.083"	120mm×60mm	2.5mm~10mm
	0.120"	120mm×80mm	2.5mm~10mm
	0.188"	140mm×60mm	2.5mm~10mm
	0.250"	140mm×80mm	2.5mm~10mm
	0.312"	150mm×100mm	2.5mm~12mm

 

4" x 1 1/2"	0.120"	160mm×80mm	2.5mm~12mm
	0.188"	180mm×150mm	2.5mm~12mm
4" x 2"	0.083"	200mm×100mm	4mm~12mm
	0.120"	200mm×150mm	4mm~12mm
	0.188"	220mm×140mm	4mm~12mm
	0.250"	250mm×150mm	6mm~12mm
	0.312"	250mm×100mm	6mm~12mm
	0.375"	250mm×200mm	6mm~30mm
4" x 2 1/2"	0.188"	300mm×100mm	6mm~30mm
	0.250"	300mm×150mm	6mm~30mm
4" x 3"	0.083"	300mm×200mm	6mm~30mm
	0.120"	300mm×250mm	6mm~30mm
	0.188"	400mm×250mm	8mm~30mm
	0.250"	400mm×300mm	8mm~30mm
	0.312"	450mm×200mm	8mm~30mm
	0.375"	450mm×250mm	8mm~30mm
4 1/2" x 2 1/2"	0.188"	400mm×300mm	8mm~30mm
	0.250"	400mm×350mm	8mm~30mm
5" x 2"	0.120"	500mm×200mm	10mm~30mm
	0.188"	500mm×250mm	10mm~30mm
	0.250"	500mm×300mm	10mm~30mm
	0.312"	500mm×350mm	10mm~30mm
	0.375"	500mm×400mm	10mm~30mm
5" x 2 1/2"	0.120"	500mm×450mm	10mm~30mm
	0.188"	600mm×200mm	10mm~28mm
	0.250"	600mm×400mm	10mm~28mm
5" x 3"	0.188"	600mm×500mm	10mm~28mm
	0.250"	800mm×400mm	10mm~28mm
	0.312"	800mm×600mm	10mm~28mm
	0.375"	800mm×700mm	10mm~28mm
	0.500"	1000mm×400mm	10mm~28mm
5" x 4"	0.188"	1000mm×500mm	10mm~28mm
	0.250"	1000mm×600mm	10mm~28mm
	0.312"	1000mm×800mm	10mm~28mm
	0.375"
6" x 2"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"

6" x 3"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
6" x 4"	0.120"
	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
7" x 3"	0.188"
	0.250"
	0.312"
	0.375"
7" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
7" x 5"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
8" x 2"	0.188"
	0.250"
	0.312"
	0.375"
8" x 3"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"

 

8" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
8" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
9" x 3"	0.188"
	0.250"
	0.312"
	0.375"
9" x 7"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10" x 2"	0.188"
	0.250"
	0.312"
	0.375"
10" x 3"	0.188"
	0.250"
	0.312"
	0.375"
10" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
10" x 5"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"

10" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
10" x 8"	0.188"
	0.250"
	0.375"
	0.500"
	0.625"
12" x 2"	0.188"
	0.250"
	0.312"
	0.375"
12" x 3"	0.188"
	0.250"
	0.312"
	0.375"
12" x 4"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"

 

12" x 6"	0.188"
	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 8"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
12" x 10"	0.250"
14" x 4"	0.250"
	0.312"
	0.375"
	0.500"
14" x 6"	0.250"
	0.312"
	0.375"
	0.500"
14" x 10"	0.250"
	0.312"
	0.375"
	0.500"
	0.625"
16"x 4"	0.312"
	0.375"
	0.500"
16" x 8"	0.250"
	0.312"
	0.375"
	0.500"
16" x 12"	0.312"
	0.375"
	0.500"
	0.625"

 

18" x 6"	0.312"
	0.375"
	0.500"
20" x 4"	0.312"
	0.375"
	0.500"
20" x 8"	0.312"
	0.375"
	0.500"
20" x 12"	0.312"
	0.375"
	0.500"
	0.625"

 

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%

 

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	≤40
S253JRH	1.0039	235	225	215	360-510	340-470	26	25	24	23	20	27
S275J0H	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
S355J0H	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
S275J0H	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
S355J0H	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	-

 

- block letter "S" means "STEEL FOR STRUCTURAL APPLICATIONS"
- the next fi gure means the minim. yield value required for wall thickness ≤16 mm
- "J2" means impact test value -20° C min. 27 jaoule
- block letter "H" means "HOLLOW SECTION".

PMC has always inculcated and followed sten quality standards for all of its manufacturing processes. All the materials used by PMC are of premium quality and compatible with latest machineries and manufacturing technologies. The technical and commercial quality guidelines of PMC are set to high standards. A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality. 

Tests of  Hollow Section:
Chemical Component Analysis
Mechanical Properties - Elongation, Yield Strength, Ultimate Tensile Strength
Technical Properties - DWT Test, Impact Test, Blow Test, Flattening Test
X-ray Test
Exterior Size Inspection
Hydrostatic Test





FAQ

Q1. What are your company's main products ?

A2: Our main products are carbon steel seamless pipe, welded pipe, hollow section, pipe fittings(flange,elbow, tee, reducer,nipple etc.), and sheets, pipes, coils, strips, bars and channels.

 

Q2. What are the advantages of your company ?

A2: Offering finest quality-best in class products-at the most advantageous rates, as our forte.

Q3. How do you control quality ?
A3: A quality control team supervises quality assurance and control aspects along with the entire process system by recognizing and associating with the quality circle. The quality control tests are conducted regularly in order to maintain a consistent and uniform product quality.

Q4. How many coutries you already exported ? 

A4: Exported to more than 50 countries mainly from Middle East, Russia, United States, Canada, Italy, Germany, Australia, Egypt, Japan, Indonesia, Bangladesh, Turkey, India, etc.

Q5. Can you provide sample ? Do you support OEM ?

A5: Yes. Small samples in store can be provided for free. Customized samples will take about 2-3days.

Q6: What's your payment terms ?
A6: By T/T(30% deposit in advance, balance 70% before shipment),, L/C after sight 30~120 days. Western Union, Paypal, or Trade Online.