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| Categories | Seamless Alloy Steel Pipe |
|---|---|
| Certification: | ISO TUV SGS BIS CE |
| Place of Origin: | Shandong China |
| MOQ: | 3Tons |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram,OA |
| Supply Ability: | 5000Tons Per Months |
| Delivery Time: | 5-15days depend on the quantity |
| Product name: | Seamless Alloy Steel Pipe |
| Standard: | ASTM, JIS, DIN, GB |
| Type: | Hot Rolled,Cold drawn,NPS |
| Pipe end: | Plain end,Beveled end,Treaded |
| Brand Name: | TESTE |
| Packaging Details: | With iron sheet to pack the steel sheet and pallet .Also make the shipping marks on each bundles. |
| Model Number: | 20# /16Mn/ 12CrMoV /API 5L /API 5L |
| Price: | USD500~USD860 Per Ton |
| Application: | Petroleum, Chemical, Machinery, Electric Power, Shipbuilding, Papermaking, Construction |
| Length: | Customized |
| Surface Treatment: | Seamless |
| Technique: | Hot Rolled, Cold Rolled, Cold Drawn |
| High Light: | pipe |
| Company Info. |
| Qingdao Teste Metal Products Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
ASTM A355 Grade P22 Seamless Alloy Steel Pipe
Alloy pipes are tubular with higher percentages, than standard carbon steel pipes, of alloying elements as Molybdenum (Mo), Chromium (Cr), Nickel, etc. Actually, the ASTM A335 covers “low-alloy” steel pipes, i.e. pipes that have a total amount of alloying elements below 5%. The addition of higher percentages of alloying elements (example Nickel and Chromium) transforms the steel into higher alloys, like stainless steel, duplex, up to super-alloyed materials like Inconel, Hastelloy, Monel, etc.
Alloy steel pipes are used in the energy industry for high temperature and very low-temperature service (cryogenic), or for applications with very high pressures.
GRADE
| Standard | Low-Alloy Steel Grade |
| ASTM A335 | P1 P2 P5 P5b P5c P9 P11 P12 P15 P21 P22 P91 P92 |
CHEMICAL COMPOSITION
| Element | C | Mn | Si | P | S | Cr | Mo |
| P1 | 0.10~0.20% | 0.30~0.80% | 0.10~0.50% | 0.025% | 0.025% | - | 0.44~0.65% |
| P2 | 0.10~0.20% | 0.30~0.61% | 0.10~0.30% | 0.025% | 0.025% | 0.50~0.81% | 0.44~0.65% |
| P5 | 0.15% | 0.30~0.60% | 0.50% | 0.025% | 0.025% | 4.0~6.0% | 0.44~0.65% |
| P5b | 0.15% | 0.30~0.60% | 1.00~2.00% | 0.025% | 0.025% | 4.0~6.0% | 0.44~0.65% |
| P5c | 0.12% | 0.30~0.60% | 0.50% | 0.025% | 0.025% | 4.0~6.0% | 0.44~0.65% |
| P9 | 0.15% | 0.30~0.60% | 0.50~0.10% | 0.025% | 0.025% | 8.0~10.0% | 0.44~0.65% |
| P11 | 0.05~0.15% | 0.30~0.61% | 0.50~0.10% | 0.025% | 0.025% | 1.0~1.5% | 0.44~0.65% |
| P12 | 0.05~0.15% | 0.30~0.60% | 0.50% | 0.025% | 0.025% | 0.8~1.25% | 0.44~0.65% |
| P15 | 0.05~0.15% | 0.30~0.60% | 1.15~1.65% | 0.025% | 0.025% | - | 0.44~0.65% |
| P21 | 0.05~0.15% | 0.30~0.60% | 0.50% | 0.025% | 0.025% | 2.65~3.35% | 0.80~1.60% |
| P22 | 0.05~0.15% | 0.30~0.60% | 0.50% | 0.025% | 0.025% | 1.9~2.6% | 0.87~1.13% |
| P91 | 0.08~0.12% | 0.30~0.60% | 0.20~0.50% | 0.02% | 0.01% | 8.0~9.0% | 0.85~1.05% |
| P92 | 0.07~0.13% | 0.30~0.60% | 0.50% | 0.02% | 0.01% | 8.5~9.5% | 0.30~0.60% |
ALLOYING ELEMENTS
The addition of Molybdenum (“Moly”) increases the strength of the steel and its elastic limit, enhance the steel resistance to wear, its impact qualities, and the hardenability. It also improves the resistance to softening, makes chromium steel less prone to embrittlement and prevents pitting.
Chromium, a key element also for stainless steel alloys, prevents
steel oxidation at elevated temperatures and increases the
resistance of steel to corrosion. It enhances the tensile, yield, and hardness properties of
low-alloy pipes at room temperatures.
Other alloying elements, present in various degrees in pipes of all
grades are:
As mentioned, low-alloy steels have a total amount of alloying elements below 5%; high alloy steel has a higher percentage of these elements.
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