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Overview
Product introduction Seamless Alloy Steel Tube Type: Alloy Pipe, Alloy Tube, Alloy Steel Pipe, Alloy Steel Tube Application: In Petroleum, Aerospace, Chemical, Power, Boilers, Military Industry Specification: Outside Diameter: 1/8'' ~ 26'' Wall Thickness: SCH 30, 30, 40, 60, 80, 120, 140, 160, XS, XXS, STD Length: Single Random, Double Random, Cut Length max to 23m Standard & Grade: ASTM A333, A335 P5/P9/P11/P22/P91, DIN 17175, JIS G3458 End: Plain End, Beveled End, Thread End Packing: Bundled with Hemp Rope/In Bulk Alloy pipe is a kind of seamless steel pipe, its performance is much higher than that of general seamless steel pipe, because this type of steel pipe contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance performance is much better than other Steel pipe , so the alloy pipe is widely used in petroleum, aerospace, chemical, electric power, boiler, military and other industries. Product SEAMLESS / ERW / SAW ALLOY STEEL PIPE Dimension 6 mm - 1080 mm Thickness 1mm - 135 mm Length 3 m - 12 m or according to the requirements of clients Standard ASTM GB DIN Steel grade A106/53/179/214/192/210 A/B/C ST37.2/35.4/35.8/52/52.3/52.4/42/45 10# 20# 45# P2, P12, P11, P22, P5, P9, P91 T2, T11,T5,T9,T22, 4140, 12CrMo, 15CrMo, 12Cr2Mo, 1Cr5Mo, 2CrMo4, 1Cr9Mo, 10CrMo910, etc. Trade terms FOB/CIF/CFR Payment terms T/T, L/C Delivery port Tianjin, China Delivery time 10 or according to the real quantity of the tubes Surface treatment Black painting Varnish painting 3PE Hot galvanized or other coating according to your requirements Bare tube End of tubes Beveled, plain, thread, plastic caps Inspection Ultrasonic examination, eddy inspection, hydrosttic testing etc. Package Bundles, lossen or according to your requirements Certificate API 5L/5CT, ISO, PED etc. Technical data Chemical Composition C, % Mn, % P, % S, % Si, % Cr, % Mo, % 0.05-0.15 0.30-0.60 0.025 max 0.025 max 0.50-1.00 1.00-1.50 0.44-0.65 Mechanical Properties Tensile Strength, MPa Yield Strength, MPa Elongation, % 415 min 205 min 30 min Outside Diameter & Tolerance ASTM A450 Hot rolled Outside Diameter, mm Tolerance, mm OD≤101.6 +0.4/-0.8 101.6<OD≤190.5 +0.4/-1.2 190.5<OD≤228.6 +0.4/-1.6 Cold Drawn Outside Diameter, mm Tolerance, mm OD<25.4 ±0.10 25.4≤OD≤38.1 ±0.15 38.1<OD<50.8 ±0.20 50.8≤OD<63.5 ±0.25 63.5≤OD<76.2 ±0.30 76.2≤OD≤101.6 ±0.38 101.6<OD≤190.5 +0.38/-0.64 190.5<OD≤228.6 +0.38/-1.14 ASTM A530 & ASTM A335 NPS Outside Diameter, inch Tolerance, mm 1/8≤OD≤1-1/2 ±0.40 1-1/2<OD≤4 ±0.79 4<OD≤8 +1.59/-0.79 8<OD≤12 +2.38/-0.79 OD>12 ±1% Wall thickness & Tolerance ASTM A450 Hot rolled Outside Diameter, mm Tolerance, % OD≤101.6, WT≤2.4 +40/-0 OD≤101.6, 2.4<WT≤3.8 +35/-0 OD≤101.6, 3.8<WT≤4.6 +33/-0 OD≤101.6, WT>4.6 +28/-0 OD>101.6, 2.4<WT≤3.8 +35/-0 OD>101.6, 3.8<WT≤4.6 +33/-0 OD>101.6, WT>4.6 +28/-0 Cold Drawn Outside Diameter, mm Tolerance, % OD≤38.1 +20/-0 OD>38.1 +22/-0 ASTM A530 NPS Outside Diameter, inch Tolerance, % 1/8≤OD≤2-1/2 +20.0/-12.5 3≤OD≤18, WT/OD≤5% +22.5/-12.5 3≤OD≤18, WT/OD>5% +15.0/-12.5 OD≥20, WT/OD≤5% +22.5/-12.5 OD≥20, WT/OD>5% +15.0/-12.5 Standard ASTM A335--for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service ASTM A519--for Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A213--for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes ASTM ASME (S)A-335/(S)A-335M Grade and Chemical Composition Grade UNS C≤ Mn P≤ S≤ Si≤ Cr Mo 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 0.44~0.65 P5b K51545 0.15 0.30~0.60 0.025 0.025 1.00~2.00 4.00~6.00 0.44~0.65 P5c K41245 0.12 0.30~0.60 0.025 0.025 0.50 4.00~6.00 0.44~0.65 P9 S50400 0.15 0.30~0.60 0.025 0.025 0.50~1.00 8.00~10.00 0.44~0.65 P11 K11597 0.05~0.15 0.30~0.61 0.025 0.025 0.50~1.00 1.00~1.50 0.44~0.65 P12 K11562 0.05~0.15 0.30~0.60 0.025 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 0.80~1.60 P22 K21590 0.05~0.15 0.30~0.60 0.025 0.025 0.50 1.90~2.60 0.87~1.13 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 P92 K92460 0.07~0.13 0.30~0.60 0.020 0.010 0.50 8.50~9.50 0.30~0.60 Note: (S)A335 P91 other chemical composition are : V 0.18~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.06~0.10 (S)A335 P92 other chemical composition are : V 0.15~0.25; N 0.030~0.070; Ni ≤ 0.40; Al ≤ 0.04 ; Nb 0.04~0.09; W 1.5~2.00 ; B 0.001~0.006
Confirm pipe or fitting standard, grade, OD, wall thickness, length, and end finish before quotation.
Share quantity, destination port, packing method, pressure or structural use, and inspection requirements.
Clarify whether coating, threading, beveling, marking, or bundled mixed-size shipment is needed.
Full specifications
| Property | Value |
|---|---|
| Product | SEAMLESS / ERW / SAW ALLOY STEEL PIPE |
| Dimension | 6 mm - 1080 mm |
| Thickness | 1mm - 135 mm |
| Length | 3 m - 12 m or according to the requirements of clients |
| Standard | ASTM GB DIN |
| Steel grade | A106/53/179/214/192/210 A/B/C ST37.2/35.4/35.8/52/52.3/52.4/42/45 10# 20# 45# P2, P12, P11, P22, P5, P9, P91 T2, T11,T5,T9,T22, 4140, 12CrMo, 15CrMo, 12Cr2Mo, 1Cr5Mo, 2CrMo4, 1Cr9Mo, 10CrMo910, etc. |
| Trade terms | FOB/CIF/CFR |
| Payment terms | T/T, L/C |
| Delivery port | Tianjin, China |
| Delivery time | 10 or according to the real quantity of the tubes |
| Surface treatment | Black painting Varnish painting 3PE Hot galvanized or other coating according to your requirements Bare tube |
| End of tubes | Beveled, plain, thread, plastic caps |
| Inspection | Ultrasonic examination, eddy inspection, hydrosttic testing etc. |
| Package | Bundles, lossen or according to your requirements |
| Certificate | API 5L/5CT, ISO, PED etc. |
| OD≤101.6 | +0.4/-0.8 |
| 101.6<OD≤190.5 | +0.4/-1.2 |
| 190.5<OD≤228.6 | +0.4/-1.6 |
| OD<25.4 | ±0.10 |
| 25.4≤OD≤38.1 | ±0.15 |
| 38.1<OD<50.8 | ±0.20 |
| 50.8≤OD<63.5 | ±0.25 |
| 63.5≤OD<76.2 | ±0.30 |
| 76.2≤OD≤101.6 | ±0.38 |
Export seaworthy packing with bundle labels and loading support.
Mill certificate, inspection support, and shipment documentation can be coordinated before loading.
FAQ
Please confirm grade or standard, size, quantity, destination port, packing method, and required inspection documents before requesting a quotation for Seamless Alloy Steel Tube.
Yes. Mill test certificates, packing lists, commercial documents, and optional third-party inspection can be coordinated before shipment.
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