ASTM A335 is the standard specification for seamless alloy steel pipe for high temperature service. It covers sever grades: P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122, out of which P5, P9, P11, P22, P91, and P92 are most widely utilized in practice.
P1, P2, P5, P5b, and P5c are low alloy steel pipes with relatively low chromium content.
P9 is a medium-low alloy steel pipe with high chromium and molybdenum content.
P11, P12, and P15 are medium alloy steel pipes with moderate amounts of chromium, molybdenum, and iron.
P21, P22, and P23 are high alloy steel pipes with higher levels of chromium, molybdenum, and iron.
P91 and P92 are special high alloy steel pipes with very high levels of chromium, molybdenum, and iron, suitable for high temperature and high pressure working conditions.
P122 is a secondary hardening alloy steel pipe with extremely high strength and corrosion resistance.
P911 alloy steel pipe is mainly used in high temperature and high pressure environments, such as the petroleum industry, chemical industry, and thermal power stations. It has excellent high temperature resistance and oxidation resistance, making it suitable for pipeline transportation and heat exchangers in high temperature conditions.
These alloy steel pipes are widely used in industries such as petroleum, natural gas, chemical, power, and nuclear power, for manufacturing pipelines, furnace tubes, and other high temperature and high pressure equipment.
Specification | ASTM A335/A335M |
Grades | P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122 |
Size | |
Thickness | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140SCH160,XXS/Custom size |
Length | Single Random, Double Random, Cut to length/Custom size |
ASTM A335/ A335M Chemical Composition % | |||||||||
Grade | UNS | C | Mn | P | S | Si | Cr | Mo | Others |
P1 | K11522 | 0.10-0.20 | 0.30-0.80 | 0.025 | 0.025 | 0.10-0.50 | - | 0.44-0.65 | - |
P2 | K11547 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | - |
P5 | K41545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | - |
P5b | K51545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.00-2.00 | 4.00-6.00 | 0.45-0.65 | - |
P5c | K41245 | 0.12 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | *A |
P9 | S50400 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | - |
P11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - |
P12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0025 | 0.025 | ≤0.50 | 0.80-1.25 | 0.44-0.65 | - |
P15 | K11578 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.15-1.65 | - | 0.44-0.65 | - |
P21 | K31545 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 2.65-3.35 | 0.80-1.06 | - |
P22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 1.90-2.60 | 0.87-1.13 | - |
P23 | K41650 | 0.04-0.10 | 0.10-0.60 | 0.030 | 0.010 | 0.50 | 1.90-2.60 | 0.05-0.30 | *B |
P36 | K21001 | 0.10-0.17 | 0.80-1.20 | 0.030 | 0.025 | 0.25-0.50 | 0.30 | 0.25-0.50 | *C |
P91 | K91560 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | *D |
P92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.50 | 8.50-9.50 | 0.30-0.60 | *E |
P122 | K92930 | 0.07-0.14 | 0.70 | 0.020 | 0.010 | 0.50 | 10.00-11.50 | 0.25-0.60 | *F |
P911 | K91061 | 0.09-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.10-0.50 | 8.50-9.50 | 0.90-1.10 | *G |
ASTM A335 Grade | Tensile Strength | Yield Strength | Elongation % | Hardness(HB) | |||
ksi | MPa | ksi | MPa | Longitudinal | Transverse | ||
P1 | 55 | 380 | 30 | 205 | 30 | 20 | - |
P2 | 55 | 380 | 30 | 205 | 30 | 20 | - |
P5 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P5b | 60 | 415 | 30 | 205 | 30 | 20 | - |
P5c | 60 | 415 | 30 | 205 | 30 | 20 | - |
P9 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P11 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P12 | 60 | 415 | 32 | 220 | 30 | 20 | - |
P15 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P21 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P22 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P23 | 74 | 510 | 58 | 400 | 20 | - | - |
P91 | 85 | 585 | 60 | 415 | 20 | - | ≤250 |
P92 | 90 | 620 | 64 | 440 | 20 | - | ≤250 |
P122 | 90 | 620 | 58 | 400 | 20 | - | ≤250 |
P911 | 90 | 620 | 64 | 400 | 20 | - | - |
ASTM A335 seamless steel pipes are high-temperature alloy steel pipes commonly used in industrial applications under high temperature and high pressure. The production process of these pipes involves several steps:
1.Material Selection: High-quality alloy steel materials are selected as raw materials to ensure the high-temperature and high-pressure performance of the pipes.
2.Heating: The raw materials are heated to an appropriate temperature, usually between 1100°C and 1400°C, to soften and deform them.
3.Piercing: Steel core drills or taper rollers are used to pierce the heated raw materials, forming the initial shape of the seamless steel pipes.
4.Rolling: The pierced raw materials are rolled multiple times through rolling mills, gradually reducing the wall thickness and outer diameter of the pipes while increasing their length.
5.Heat Treatment: The rolled pipes are subjected to heat treatment, typically quenching and tempering, to adjust their microstructure and mechanical properties at high temperatures.
6.Inspection: Various inspections are carried out on the heat-treated pipes, including chemical composition analysis, mechanical property testing, and non-destructive testing, to ensure the quality of the pipes.
7.Surface Treatment: The pipes undergo surface treatments such as rust removal, acid cleaning, or sandblasting to achieve good surface finish and corrosion resistance.
8.Packaging and Transportation: The finished pipes are packaged and safely transported to the designated location as specified by the customer.
The production process of ASTM A335 seamless steel pipes ensures the quality and performance of the pipes, allowing them to be used safely and reliably in high-temperature and high-pressure environments.
ASTM A335 is the standard specification for seamless alloy steel pipe for high temperature service. It covers sever grades: P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122, out of which P5, P9, P11, P22, P91, and P92 are most widely utilized in practice.
P1, P2, P5, P5b, and P5c are low alloy steel pipes with relatively low chromium content.
P9 is a medium-low alloy steel pipe with high chromium and molybdenum content.
P11, P12, and P15 are medium alloy steel pipes with moderate amounts of chromium, molybdenum, and iron.
P21, P22, and P23 are high alloy steel pipes with higher levels of chromium, molybdenum, and iron.
P91 and P92 are special high alloy steel pipes with very high levels of chromium, molybdenum, and iron, suitable for high temperature and high pressure working conditions.
P122 is a secondary hardening alloy steel pipe with extremely high strength and corrosion resistance.
P911 alloy steel pipe is mainly used in high temperature and high pressure environments, such as the petroleum industry, chemical industry, and thermal power stations. It has excellent high temperature resistance and oxidation resistance, making it suitable for pipeline transportation and heat exchangers in high temperature conditions.
These alloy steel pipes are widely used in industries such as petroleum, natural gas, chemical, power, and nuclear power, for manufacturing pipelines, furnace tubes, and other high temperature and high pressure equipment.
Specification | ASTM A335/A335M |
Grades | P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P91, P92, P122 |
Size | |
Thickness | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140SCH160,XXS/Custom size |
Length | Single Random, Double Random, Cut to length/Custom size |
ASTM A335/ A335M Chemical Composition % | |||||||||
Grade | UNS | C | Mn | P | S | Si | Cr | Mo | Others |
P1 | K11522 | 0.10-0.20 | 0.30-0.80 | 0.025 | 0.025 | 0.10-0.50 | - | 0.44-0.65 | - |
P2 | K11547 | 0.10-0.20 | 0.30-0.61 | 0.025 | 0.025 | 0.10-0.30 | 0.50-0.81 | 0.44-0.65 | - |
P5 | K41545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | - |
P5b | K51545 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.00-2.00 | 4.00-6.00 | 0.45-0.65 | - |
P5c | K41245 | 0.12 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 4.00-6.00 | 0.45-0.65 | *A |
P9 | S50400 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | - |
P11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - |
P12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0025 | 0.025 | ≤0.50 | 0.80-1.25 | 0.44-0.65 | - |
P15 | K11578 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 1.15-1.65 | - | 0.44-0.65 | - |
P21 | K31545 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 2.65-3.35 | 0.80-1.06 | - |
P22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 | 1.90-2.60 | 0.87-1.13 | - |
P23 | K41650 | 0.04-0.10 | 0.10-0.60 | 0.030 | 0.010 | 0.50 | 1.90-2.60 | 0.05-0.30 | *B |
P36 | K21001 | 0.10-0.17 | 0.80-1.20 | 0.030 | 0.025 | 0.25-0.50 | 0.30 | 0.25-0.50 | *C |
P91 | K91560 | 0.08-0.12 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | *D |
P92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.50 | 8.50-9.50 | 0.30-0.60 | *E |
P122 | K92930 | 0.07-0.14 | 0.70 | 0.020 | 0.010 | 0.50 | 10.00-11.50 | 0.25-0.60 | *F |
P911 | K91061 | 0.09-0.13 | 0.30-0.60 | 0.020 | 0.010 | 0.10-0.50 | 8.50-9.50 | 0.90-1.10 | *G |
ASTM A335 Grade | Tensile Strength | Yield Strength | Elongation % | Hardness(HB) | |||
ksi | MPa | ksi | MPa | Longitudinal | Transverse | ||
P1 | 55 | 380 | 30 | 205 | 30 | 20 | - |
P2 | 55 | 380 | 30 | 205 | 30 | 20 | - |
P5 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P5b | 60 | 415 | 30 | 205 | 30 | 20 | - |
P5c | 60 | 415 | 30 | 205 | 30 | 20 | - |
P9 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P11 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P12 | 60 | 415 | 32 | 220 | 30 | 20 | - |
P15 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P21 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P22 | 60 | 415 | 30 | 205 | 30 | 20 | - |
P23 | 74 | 510 | 58 | 400 | 20 | - | - |
P91 | 85 | 585 | 60 | 415 | 20 | - | ≤250 |
P92 | 90 | 620 | 64 | 440 | 20 | - | ≤250 |
P122 | 90 | 620 | 58 | 400 | 20 | - | ≤250 |
P911 | 90 | 620 | 64 | 400 | 20 | - | - |
ASTM A335 seamless steel pipes are high-temperature alloy steel pipes commonly used in industrial applications under high temperature and high pressure. The production process of these pipes involves several steps:
1.Material Selection: High-quality alloy steel materials are selected as raw materials to ensure the high-temperature and high-pressure performance of the pipes.
2.Heating: The raw materials are heated to an appropriate temperature, usually between 1100°C and 1400°C, to soften and deform them.
3.Piercing: Steel core drills or taper rollers are used to pierce the heated raw materials, forming the initial shape of the seamless steel pipes.
4.Rolling: The pierced raw materials are rolled multiple times through rolling mills, gradually reducing the wall thickness and outer diameter of the pipes while increasing their length.
5.Heat Treatment: The rolled pipes are subjected to heat treatment, typically quenching and tempering, to adjust their microstructure and mechanical properties at high temperatures.
6.Inspection: Various inspections are carried out on the heat-treated pipes, including chemical composition analysis, mechanical property testing, and non-destructive testing, to ensure the quality of the pipes.
7.Surface Treatment: The pipes undergo surface treatments such as rust removal, acid cleaning, or sandblasting to achieve good surface finish and corrosion resistance.
8.Packaging and Transportation: The finished pipes are packaged and safely transported to the designated location as specified by the customer.
The production process of ASTM A335 seamless steel pipes ensures the quality and performance of the pipes, allowing them to be used safely and reliably in high-temperature and high-pressure environments.
