Square seamless pipe/ Rectangular pipe:
Diameter 30×20—1200×1500mm
Thickness 3-40mm
Non-standard specifications can be customized
Specializing in the manufacture of large-diameter thick-walled square and rectangular pipes
Right-angle sharp-angle square and rectangular pipes
| Product Name | Square seamless pipe/ Rectangular pipe |
| Material | ASTM A53A/A53B/A106A/A106B/A106C/A178C/A179/A192/A210, API5L 10#, 20#, 45#, Q235, Q345, Q195, Q215, Q345C, Q345A ST37, ST37-2, DIN 1629 ST35, ST45, DIN 17175 ST35.8, DIN 17175 19Mn5 16Mn, Q345B, T1, T2, T5, T9, T11, T12, T22, T91, T92, P1, P2, P5, P9, P11, P12, P22, P91, P92, 15CrMO, Cr5Mo, 10CrMo910, 12CrMo 13CrMo44, 30CrMo, A333 GR.1, GR.3, GR.6, GR.7 Gr.B, X42, X46, X52, X60, X65, X70, X80, X100, etc |
| Standard | ASTM, AISI, JIS, EN, DIN, GB, API, etc |
| Outer Diameter | 6mm~720mm |
| Wall Thickness | 0.25mm~200mm |
| Length | Length: 1m~12m or customize |
| Tolerance | Wall thickness: ±0.05mm, Length: ±6mm, Outer diameter: ±0.3mm |
| Shape | Round, Square, Rectangle, Oval, Deformed |
| Technique | Cold rolled, Hot rolled, Cold drawn, Hot dip galvanized |
| Certificate | ISO, CE, BV, SGS |
| Surface Treatment | Bare pipe, oiled, galvanized, black painted, 3PE |
| Pipe Ends | Plain ends, grooved/threaded/beveled ends, coupling, end with plastic cap |
| Packing | In bundles |
| Delivery Time | Delivered within 7-30 days after receipt of deposit |
| Trade Term | FOB, EXW, CIF, CFR |
| Payment Term | T/T, L/C at sight, Western Union |
| MOQ | 5 tons, we can accept sample order. |
| Application | Widely used in furniture, interior decoration, fluid pipeline, petroleum and natural gas industry, drilling, structure, fence, greenhouse, door pipe, low pressure liquid/water/gas/oil line pipe, for the scaffolding/building construction, etc |
Normally, shaped steel pipes are distinguished by section and appearance, Generally can be divided into a triangle shaped steel tube, hexagonal shaped steel tube, oval shaped steel tube, prismatic shape profiled steel pipe, stainless steel plate type pipe, stainless steel plate of U type tube, D type pipe, stainless steel capillary, s-shaped bend, octagonal shaped steel tube, semicircle shaped steel tube, not equilateral hexagons five disc shaped steel tube, the plum flower form shaped steel tube, double double concave convex shaped steel tube, steel pipe.
The difficulty of the production process of shaped steel pipe is quenching and polishing:
Tips: Quenching
Shaped steel pipe quenching problem, under general conditions, for some large and medium-sized professional production and manufacturing special-shaped steel pipe processing plants will choose underwater sonar to detect, the reason is that according to the production of goods manufactured by this processing plant are more stringent, the general selection of instruments and equipment detection is safer.
For small and medium-sized enterprises that generally manufacture and process shaped steel pipes, due to the relatively high price of underwater sonar detection instruments, they generally choose the human way to test, which is called echo resolution. The specific process is as follows: knock each tube treatment, listen to the echo of the branch pipe, if the echo is higher and sharper, it is already too quenched. Due to the symmetrical and high density of the crystallization mechanism inside the quenching parts, it can cause a higher tone echo. And unquenched shaped steel pipe because of more shortcomings of the mechanism, can digest and absorb part of the acoustic frequency kinetic energy, so in the branch pipe at a lower tone, some are blocked.
Tips:polishing
The following three points should be paid attention to when polishing shaped steel pipes:
After deep stretching products, there will be small black spots on the surface of areas with huge shape variables, which will still affect the grinding and polishing property.
Pay attention to the material elements of stainless steel plate raw materials. If the strength is too low, the polishing step is more difficult, and the strength is too low. Orange peel is easy to appear on the surface of deep drawing, which affects the polishing and polishing property. For materials with high strength, their polishing property is relative.
