Product details
We supply a wide range of precision designed P21 alloy steel tubes manufactured in accordance with international quality and safety standards. Our range consists of A335 P21 Pipe steel alloy. Available in different dimensions and grades, these ASTM A335 alloy steel seamless pipes are widely used in different industries such as energy, engineering, construction and many more. We offer these pipes at very competitive prices and deliver shipping within the stipulated time. ASME SA335 P21 High pressure steel pipes are individually wrapped by hand to ensure that the high quality of the material is maintained and does not damage in the later stages of production. We recommend plywood boxes or pallet packaging to ensure safe packaging and early delivery of ordered shipment.
We can meet most ASME, ASTM, and other specifications, and you can cross the reference to most international standards. We also offer the competitive range of ASTM A335 steel alloy P21 seamless tubes according to customer requirement. This specification covers perfect ferritic pipe steel alloy for high temperature service. The pipe must be suitable for bending, flangeping (flipping), and similar forming operations, and for fusion welding.
We also offer a competitive range of ASME SA335 gr steel alloy alloy. P21 tubes, ASTM A335 High Pressure Steel Alloy P21 Steel Pipe, ASTM A335 Seamless Alloy Steel Pipes, Alloy Steel Pipe, Alloy Steel Uns K31545 Pipes, Alloy Steel P21 Seamless Pipe, Alloy Steel Shareholder Gr Alloy Steel. P21 Seamless Tubes, Alloy Steel P21 Pipe, Grade P21 Steel Alloy Exporter Pipe. We store a large inventory of high quality ASME SA335 steel alloy P21 pipe, A335 P21 High Pressure Pipe, Alloy Steel P21 Seamless Tubes Stockist, Alloy Steel A335 Grade P21 Seamless Pipe, Global Supplier of Alloy Steel P21 Pipe, ASTM A335 Alloy Steel P21 Seamless Pipe, Grade P21 ASTM A335 Alloy Steel Pipe, Steel Alloy P21 Chromium Moly Pipes Distributor.
List of countries where Gnee Steel Group supplies ASTM A335 Seamless Tube P21 Steel Alloy : USA, Mexico, South Korea, Spain, Argentina, Colombia, Malaysia, Saudi Arabia, Turkey, United Kingdom.
P21 seamless steel pipe
The ASTM A335 P21 seamless steel pipe is the main structural pipe material in the use of construction and high pressure. It will be manufactured by hot rolling and cold stretching. The material used correctly in the transfer of oil and gas, hot water at high pressure, special structure, transport of special chemicals, etc. The outer surface can be treated by galvanizing, painting, PE coating, PP coating, HDPE coating, etc... The main advantage is that the thickness can be large, then high pressure will be loaded into low quality steel. The normal valid usage time will be around 50-70 years. The standard can be API, ASTM, JIS, etc.
specs:
Standard: ASTM A / ASME SA335
Pipe size : 1 / 8NB A 26NB EN
Outside diameter : 6-2500mm; WT: 1-200 mm
Thickness: 0.3 mm - 50 mm
Scheme: SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Seamless / EFW / Fabricated
Length: Single random, double random and required length
End: Flat end, beveled end, Treaded
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P21 seamless steel alloy pipe, ASTM A335 steel alloy P21 tube, Steel alloy P21 tube, ASTM A335 P21 tube, A335 P21 steel alloy seamless tube.
Alloy steel grade P21 seamless tubes grade and chemical composition
| Compositions | data |
| UNS designation | K31545 |
| charcoal | 0.05-0.15 |
| manganese | 0.30-0.60 |
| Phosphorus (max.) | 0.025 |
| Sulfur (max.) | 0.025 |
| silicon | 0.5 |
| nickel | ... |
| chromium | 2.65-3.35 |
| molybdenum | 0.80-1.60 |
| Other elements | ... |
Alloy steel gr. P21 pipes mechanical properties
| Tensile strength, MPa | Performance, MPa | Elongation, % |
| 415 min | 205 min | 30 min |
Outer diameter and tolerance
| ASTM A450 | Hot rolled | Outer diameter, mm | Tolerance, mm |
| OD≤101.6 | +0.4/-0.8 | ||
| 101.6<> | +0.4/-1.2 | ||
| 190.5<> | +0.4/-1.6 | ||
| Cold drained | Outer diameter, mm | Tolerance, mm | |
| OD<> | ±0.10 | ||
| 25.4≤OD≤38.1 | ±0.15 | ||
| 38.1<><> | ±0.20 | ||
| 50.8≤OD<> | ±0.25 | ||
| 63.5≤OD<> | ±0.30 | ||
| 76.2≤OD≤101.6 | ±0.38 | ||
| 101.6<> | +0.38/-0.64 | ||
| 190.5<> | +0.38/-1.14 | ||
| ASTM A530 & ASTM A335 | NPS | Outer diameter, mm | Tolerance, mm |
| 1/8≤OD≤1-1/2 | ±0.40 | ||
| 1-1/2<> | ±0.79 | ||
| 4<> | +1.59/-0.79 | ||
| 8<> | +2.38/-0.79 | ||
| OD>12 | ±1% |
ASTM A335 P21 Alloy Steel Tube Standard Packaging :
We can give peeled packaging, in packing package, packaging box, wood protection on both sides of pipes and conveniently protected for a dignified maritime delivery. According to customer requirements.
Inspection and testing of A335 P21 seamless steel alloy pipes :
(Tensile strength, production resistance, elongation, combustion, flattening, bending, hardness, impact test), chemical composition inspection, non-destructive testing, hydrostatic testing.
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