Jinxi Steel Industry Group Co.Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 100000 |
| Delivery Time | 7 days |
| Packaging Details | Bundles |
| Product Name | Alloy Steel Pipe, Alloy Steel Tube, Seamless Alloy Steel Tube, Seamless Alloy Steel Pipe, Alloy Round Tube |
| Standard | ASTM A335 P21 Alloy Steel Pipe |
| ASTM A335 P21 Tube Type | Seamless |
| ASTM A335 P21 OD | 3.2-762mm |
| ASTM A335 P21 Thickness | 0.4-63.5mm |
| ASTM A335 P21 Length Range | 5.8/11.86 Meter, 20 FT (6 Meter), 40FT (12 Meter) Or Customized |
| ASTM A335 P21 Ends Type | Beveled Ends, Plain Ends |
| ASTM A335 P21 Protection Caps | Plastic Caps |
| Brand Name | Jinxi Pipe |
| Model Number | Alloy Steel Pipe |
| Certification | ISO 9001,BV,SGS,TUV,CE |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 100000 |
| Delivery Time | 7 days | Packaging Details | Bundles |
| Product Name | Alloy Steel Pipe, Alloy Steel Tube, Seamless Alloy Steel Tube, Seamless Alloy Steel Pipe, Alloy Round Tube | Standard | ASTM A335 P21 Alloy Steel Pipe |
| ASTM A335 P21 Tube Type | Seamless | ASTM A335 P21 OD | 3.2-762mm |
| ASTM A335 P21 Thickness | 0.4-63.5mm | ASTM A335 P21 Length Range | 5.8/11.86 Meter, 20 FT (6 Meter), 40FT (12 Meter) Or Customized |
| ASTM A335 P21 Ends Type | Beveled Ends, Plain Ends | ASTM A335 P21 Protection Caps | Plastic Caps |
| Brand Name | Jinxi Pipe | Model Number | Alloy Steel Pipe |
| Certification | ISO 9001,BV,SGS,TUV,CE | Place of Origin | China |
| High Light | ASTM A335 P21 Alloy Steel Pipe ，Heat Exchanger ASTM A335 Pipe ，Corrosion Resistance ASTM Steel Pipe | ||
ASTM A335 P21 Seamless Alloy Steel Pipe For High-Temperature Steam Piping
Specification
ASTM A335 P21 Alloy Steel Pipe is a seamless, ferritic alloy steel pipe designed for high-temperature service, often called a chrome moly pipe due to its Chromium (Cr) and Molybdenum (Mo) content, which enhances high-temp strength and corrosion resistance.
| American Standard | Standard Name |
| A335 / A335M | Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
ASTM A335 P21 Alloy Steel Pipe Chemical Composition
Sources American Standard A335 / A335M TABLE 1 Chemical Requirements
| ASTM A335 Grades |
UNS Designation |
C | Mn | P | S | Si | Cr | Mo |
| P21 | K31545 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.5 | 2.65-3.35 | 0.80-1.06 |
ASTM A335 P21 Alloy Steel Pipe Mechanical Properties
Sources American Standard A335 / A335M TABLE 3 Tensile Requirements
| ASTM A335 Grade |
UNS Designation |
Yield strength, Min:ksi/MPa |
Tensile strength, Min:ksi/MPa |
Elongation Requirements % (Min) | Hardness Requirements (Max) | ||
| Brinell | Vickers | Rockwell | |||||
| P12 | K11562 | 32/220 | 60/415 | 30 | – | - | – |
ASTM A335 P21 Alloy Steel Pipe Heat Treatment
Sources American Standard A335 / A335M TABLE 2 Heat Treatment Requirements A
| ASTM A335 Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Cooling Media | Subcritical Annealing or Tempering Temperature,min or range“F[°C] |
| P21 | full or isothemmal anneal or | - | - | - |
| normalize and temper or | - | - | 1200 [650] | |
| A Where ellipses (_) appear in this table there is no requirement. | ||||
ASTM A335 P21 Alloy Steel Pipe Permissible Variations in Outside Diameter
Sources American Standard A335 / A335M TABLE 7 Permissible Variations in Outside Diameter
| NPS [DN] Designator | Over | Under | ||
| in. | mm | in. | mm | |
| 1/8 to 1 1/2 [6 to 40], incl. | 1/64 (0.015) | 0.4 | 1/64 (0.015) | 0.4 |
| Over 1 1/2 to 4 [40 to 100], incl. | 1/32 (0.031) | 0.79 | 1/32 (0.031) | 0.79 |
| Over 4 to 8 [100 to 200], incl. | 1/16 (0.062) | 1.59 | 1/32 (0.031) | 0.79 |
| Over 8 to 12 [200 to 300], incl. | 3/32 (0.093) | 2.38 | 1/32 (0.031) | 0.79 |
| Over 12 [300] | +/- 1% of the specified outside diameter | |||
ASTM A335 P21 Alloy Steel Pipe Permitted Variations in Wall Thickness
Sources American Standard A335 / A335M TABLE 8 Permitted Variations in Wall Thickness
| NPS [DN] Designator | Tolerance, % from Specified | |
| Over | Under | |
| 1/8 to 2 1/2 [6 to 65] incl., all t/D ratios | 20.00% | 12.50% |
| Above 2 1/2 [65], t/D < or = 5% | 22.50% | 12.50% |
| Above 2 1/2 [65], t/D > 5% | 15.00% | 12.50% |
| (t = Specified Wall Thickness; D = Specified Outside Diameter) | ||
ASTM A335 P21 Alloy Steel Pipe Manufacturing Proces
ASTM A335 P21 Alloy Steel Pipe Application
ASTM A335 P21 Alloy Steel Pipe Packing & Loading
a. 1/2"-2"Plain end with black oil paint, caps both ends, bundles with loading belt.
b. 2"-4"Beveled end with black oil paint, caps both ends, bundles with loading belt.
c. 10"-20"Beveled end with black oil paint, caps both ends, loose packed in to container.
→Alloy Steel Pipes is transported in containers
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter,Trading Company,Seller
Year Established:
1986
Total Annual:
10000000000-30000000000
Employee Number:
100~500
Ecer Certification：
Verified Supplier
Jinxi Steel, a professional manufacturer of steel pipes and fittings, is located in Changsha City. Guided by the scientific development concept, Jinxi Steel will comprehensively reform and develop, adhere to the path of quality and efficiency under the guidance of science and technology, persist in ... Jinxi Steel, a professional manufacturer of steel pipes and fittings, is located in Changsha City. Guided by the scientific development concept, Jinxi Steel will comprehensively reform and develop, adhere to the path of quality and efficiency under the guidance of science and technology, persist in ...
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