OEM manufacturer Steel Square Section - Black square pipe with SGS certification of high quality black steel square pipe – Zheyi

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We have our own product sales staff, style crew, technical group, QC staff and package staff. We now have strict high quality management procedures for each approach. Also, all of our workers are experienced in printing subject for Black Aluminum Square Tubing, Hot Dipped Galvanized Square Pipes, Square Metal Pipe, We honor our core principal of Honesty in business, priority in service and will do our best to offer our customers with high quality products and excellent service.

OEM manufacturer Steel Square Section - Black square pipe with SGS certification of high quality black steel square pipe – Zheyi Detail:

Black square tube is particularly durable, black square tube has good strength, toughness, plasticity and welding process performance, and has good ductility, its alloy layer and steel base firmly attached

Therefore, hot dip galvanized square tube can be cold punching, rolling, drawing, bending and other forming without damage to the coating, suitable for general processing such as drilling, cutting, welding, cold bending and other processes. Hot dip galvanized square tube surface bright and beautiful. The professional name of square pipe is rectangular pipe, with various specifications, models are generally determined by the section size, the material is generally black metal, so it is called black square pipe.

The Main Purpose Of Seamless Square Tube

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 rack, motorcycle rack, shelf, fitness equipment, Leisure and tourism products, steel furniture, various specifications of oil casing, oil pipe and line pipe, water, gas, sewage, air, heating and other fluid transportation, fire protection and support, construction and other fields.

Of course, there are quite a number of non-ferrous metal alloys (special use). It is mainly used in industrial and civil structural engineering, generally in order to determine the design requirements of rectangular steel structure material selection!

Black Square Tube

Square/Rectangular Steel Pipe/Tube

Carbon steel seamless square tube is a kind of hollow square section light-weight thin-walled steel tube, also known as steel refrigeration bending section. It is a section steel with a square cross-section shape and size made of hot-rolled or cold-rolled strip or coil as the base material, cold bending, and then high-frequency welding. In addition to the thickening of the wall thickness of the hot-rolled extra-thick-walled square tube, its corner size and edge straightness have reached or even exceeded the level of the resistance-welded cold-formed square tube.

Specification

Product Name	black square tube
Material	A53(A.B)A106 (A. B).0345,16Mn, 10#, 20#,45# S235JR. S355JR, Q320,Q360,Q410,Q460,Q490 ASTMA252, Gr.2,Gr.3.ST37, ST42, ST52, GrB, X42 X46 X52 X5 X6 X65 X70. 30CrMo .etc
Wall Thickness	2.5-75mm
Outer Diameter	13.7-1219.2mm
Length	Length:Single random length/Double random length 5m-14m,5.8m,6m,10m-12m,12m or as customer’s actual reques
Standard	API 5L, ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS ANSI B36.1 6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711
Section Shape	Square, Rectangular, Round,
Pipe Ends	Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
Surface Treatment	1. Galvanized,bare 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement

Size

REGULAR SIZE
SIZE (OUTER DIAMETER)	WALL THICKNESS	LENGTH
20×20 / 25×25	1.2MM –2.75MM	6M IN STOCK (OR CUSTOMIZED)
30×30 / 20×40 / 30×40 / 25×40	1.2MM — 3.5MM	6M IN STOCK (OR CUSTOMIZED)
40×40 / 50x5030x50 / 25×50 / 30×60 / 40×60	1.2MM — 4.75 MM	6M IN STOCK (OR CUSTOMIZED)
60×60 / 50×70 / 40×80 / 40×50	1.2 MM — 5.75 MM	6M IN STOCK (OR CUSTOMIZED)
70×70 / 60×80 / 50×80 / 100×40 / 50×90	1.5MM — 5.75 MM	6M IN STOCK (OR CUSTOMIZED)
75×75 / 80×80 / 90×90 60×100 / 50×100 / 120×60 / 100×80 / 60×90	1.5MM — 7.75 MM	6M IN STOCK (OR CUSTOMIZED)
100×100 / 120×80	1.8MM — 7.75 MM	6M IN STOCK (OR CUSTOMIZED)
120×120 / 130×130 180×80 / 160×80 / 100×150 / 140×80 / 140×60	2.5MM — 10.0 MM	6M IN STOCK (OR CUSTOMIZED)
140×140 / 150×150 / 100×180 / 200×100	2.5MM — 10.0 MM	6M IN STOCK (OR CUSTOMIZED)
160×160 / 180×180 / 200×150	3.5MM — 11.0 MM	6M IN STOCK (OR CUSTOMIZED)
200×200 / 250×150 / 100×250	3.5MM — 11.0 MM	6M IN STOCK (OR CUSTOMIZED)
250×250 / 250×200 / 300×150 / 300×200	4.5MM — 15.0 MM	6M IN STOCK (OR CUSTOMIZED)
300×300 / 350×200 / 350×250 /300×150	4.5MM — 15.0 MM	6M IN STOCK (OR CUSTOMIZED)
350×350 350×300 / 450×250 / 400×300 / 500×200	4.5MM — 15.75 MM	6M IN STOCK (OR CUSTOMIZED)
400×400 / 280×280 450×300 / 450×200 / 400×350 / 400×250 / 500×250 / 500×300	4.5MM — 15.75 MM	6M IN STOCK (OR CUSTOMIZED)

Seamless Pipes Are Divided Into

1. High pressure chemical fertilizer pipe: 10 20 16Mn GB6479-2000 ∮8-1240*1-200 Is suitable for chemical
equipment and pipelines with working temperature of -40-400 ºC and working pressure of 10-32mpa

2. Conveying fluid pipe: 10#, 20#ASTM A106A,B,C, A53A,B16Mn& Lt; Q345A. B.C.D.E & gt; GB/T8163-2008
ASTM A106ASTM A53 ∮8-1240*1-200 Suitable for conveying fluid general seamless steel pipe

3. General structure tube: 10#, 20#, 45#, 27SiMnASTM A53A,B16Mn GB/T8162-2008
GB/T17396-2009ASTM A53 ∮8-1240*1-200 suitable for general structure, engineering support, mechanical processing, etc

4. Oil Tubing: J55, K55, N80, L80C90, C95, P110 API SPEC 5CTISO11960 ∮60.23-508.00*4.24-16.13 Tubing
is used to extract oil or natural gas from oil Wells as well walls