Q235B Low Black Square Steel Tube Welding Steel Pipes Rectangular Hollow Tubular

• Customization: Available
• Type: Welded
• Technique: ERW
• Material: Carbon Steel
• Surface Treatment: Galvanized
• Usage: Pipeline Transport, Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Square
• Shape: Square Pipe
• Grade: Q235 Q345 St37 St52 St37-2 20# 16mn
• Surface: Black, Paint, Galvanized
• Outer Diameter: 10*10~1000*1000mm
• Thickness: 0.5-50mm
• Application: Structure Pipe, etc
• Packing: in Bundles
• Delivery Time: Within 15~20 Days
• Sample: Avaliable
• Transport Package: Standard Export Sea-Worthy Packing
• Specification: 50*50*10*8000
• Trademark: HJ steel
• Origin: Shandong Province, China
• Production Capacity: 5000tons Per Month

Product Description

 

Product Description

 

Shape	Round pipe	Square pipe	Rectangular pipe
Outer diameter	17-1820mm	10*10-1000*1000mm	5*10-600*800mm
Wall thickness	0.5-50mm	0.5-50mm	0.5-50mm
Part of sizes  commonly used		10*10*0.5mm 50*50*16mm  50*50-100*100*(1.0mm~20mm)  100*100-300*300*(1.0mm~50mm) 300*300-600*600*(2.0mm~50mm) 100*100*12mm 135*135*(10mm~12mm)  170*170*(1.5mm~20mm) 180*180*(1.5mm~20mm) 220*220*(2.0mm~25mm)  280*280*(2.0mm~25mm) 320*320*(2.0mm~30mm) 380*380*(4.0mm~36mm)  430*430*(6mm~40mm) 500*500*(8mm~50mm)  520*520*(8mm~50mm) 550*500*(8mm~50mm) 450*450*(6mm~50mm) 600*600*(6mm~50mm)	10*5*0.5mm 80*200*12mm  160*120*(2mm~20mm) 180*140*(2mm~25mm) 250*150*(2mm~20mm) 300*200*(4mm~25mm)  350*150*(2mm~25mm) 300*100*(2mm~20mm)  350*250*(4mm~30mm)  350*300*(4mm~30mm) 305*102*(3.0mm~25mm)  304*254*(3.0mm~25mm)  360*310*(3.0mm~25mm) 360*240*(3.0mm~25mm)  350*100*(3.0mm~14mm)  310*210*(3.0mm~25mm) 300*200*(4mm~30mm)  400*150*(4mm~30mm)  400*200*(6mm~30mm) 400*250*(4mm~50mm)  450*250*(4mm~50mm)  500*200*(6mm~50mm) 450*350*(6mm~50mm)  500*300*(6mm~50mm)  600*800*(6mm~50mm)
Length	4m-14m or as customers' requirements
Standard	BS1387-85,GB/T3091-08,DIN2440,JIS-G3444,EN10255,ASTM A53,
Surface	Black, paint, galvanized
Zinc coating	Pre galvanized steel pipe: 60-150g/m2; Hot dipped galvanized steel pipe: 200-400g/m2
End finish	Plain/ beveled ends or threaded with sockets/coupling and plastic caps.
Material	Q235 Q345 St37 St52 St37-2 10# 20# 16Mn
Usage	Scaffolding pipe, Structure pipe, Fence/Door pipe, Furniture,
	Lowpressure fluid pipe for water oil or gas, Boiler pipe.
Place of origin	Shandong,China
Productivity	6000Mts/Month
Inspection	With hydraulic testing, eddy current and infrared test, or any third party inspction
Packing	In bundles, packed in woven bag; in loose; or request.
Delivery time	Within 20 days after the prepayment
Payment Terms	1) Payment term : T/T ;L/C;D/P   2) Trade Terms : FOB / CFR /CIF
	3) Minimum quantity of order : 25 MT
Others	1:Special design available according to requirement
	2:Pipe can be necked dowm, punching hole on pipe wall.
	3:Pipe fittings, elbows are available.
	4.All production process are under the ISO9001:2000 strictly

2. Chemical Composition

Grade	Chemical Composition					Mechanical Properties
	C	Mn	Si	S	P	Yield	Tensile	Eelongation
						Strength Mpa	Strenth Mpa	%
Q195	0.06-0.12	0.25-0.50	≤0.30	≤0.045	≤0.05	≥195	315-430	≥33
Q215	0.09-0.15	0.25-0.55	≤0.30	≤0.05	≤0.045	≥217	335-450	≥27
Q235	0.12-0.20	0.30-0.67	≤0.30	≤0.045	≤0.04	≥235	375-500	≥26
Q345	≤0.20	1.00-1.60	≤0.55	≤0.04	≤0.04	≥345	470-630	≥22

 

Square rectangular pipe is a name for square pipe and rectangular pipe, that is, steel pipes with equal and unequal side lengths.

 

It is made of strip steel by processing and rolling. Generally, the strip is unpacked, flat, crimped, welded to form a round tube, which is then rolled into a square tube and cut to the required length.

The usual delivery length of rectangular tubes is 4000mm-12000mm, with 6000mm and 12000mm being the majority.

 

 

Application: Widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration and steel structure fields.

 

Square pipe according to the production process: hot rolled seamless square pipe, cold drawn seamless square pipe, extrusion seamless square pipe, welded square pipe
 

 

Detailed Photos

 

 

 

 

Packaging & Shipping

 

 

 

 

Company Profile

 

Liaocheng Huajian Steel Co., Ltd Information

We are localed in Liaocheng city, Shandong Province, 
which is known as "the Water City of Jiangbei". 
Our company were established in the year 2012. 
And the registered capital is 101,0000 RMB. 
We are a modern private enterprises,
which are specialized in exporting steel materials in China, 
and we win high reputations from our customers.

Main product:

·Steel Profile:H-Beam/I-Beam/Equal Angle/Unequal Angle/U Channel /Flat Bar

·Steel Plate:Hot Rolled Coil/Hot Rolled Checkered Coil/Cold Rolled Coil

·Wire Bar: Round Bar /Wire Rod/Deformed Steel Bar

·Steel Pipes: Seamless Pipe, Square/Round Pipes, welded steel pipe

·Galvanized Steel: Angle/Channel/I-Beam/Round Bar/Flat Bar/Round-Square Pipe

Contact

Salesman: Ada wang 

6. FAQ
1) why you chose us ?
Because we have large stocks and we have long term cooperative factories. We can get the lowest ex-factory prices. The price are quite reasonable and it is lower than our commercial peers. Also, we can guarantee the quality of our products.
2) Our minimum order quantity:
15 Metric Tons
3) How about the Delivery Time?
The steel pipe will be produced since we getting your deposit by T/T or original L/C, and delivery to the port of loading within 25~30 days. 
For normal size, some stocks in our factory now, we can shipment within 7~10 days after receive the deposit.
4) What kind of payment does your company support?
T/T, 100% L/C at sight.
5) Do you charge for the samples?
No, we provide samples free, you pay for the freight charge.
6) Main market:
Mid East South America South Asia Africa Southeast Asia Northern Europe Western Europe etc.

If you are interested in our products, please contact with me freely !