Complaint
| Product Name | ASTM A209 Grade T1a Alloy-Steel Boiler and Superheater Tubes | |
| Size | OD | 17.2-168.3mm |
| Thickness | 1-15mm | |
| Max Length | 19m | |
| Steel Material | ASTM A178/179/192/210, A106, EN10216-1/2, DIN17175/1629, JIS G3454, etc. | |
| Steel Grade | A179,A192,GR.A/B/C, P235TR1/2, P235GH, ST45.8, ST37, | |
| STB340, STB440,15MoG, 15CrMoG, 16Mn,13CrMo4-5, etc. | ||
| Process | Cold drawn, Cold rolled | |
| Usage | for the heat-transfer equipment; for high, middle, low pressure bolier and pressure purpose; applied for manufacturing pipeline, vessel, equipment, pipe fittings and steel structure , etc | |
| Surface | Oil, varnish, passivation, phoshating, shot blasting, etc | |
| End | Plain, Beveled with caps | |
| Package | Reinforced plywood case bysted angle bar, | |
| Playwood cased Plastic bags packing, Condenser, | ||
| heat exchanger tube packing, | ||
| U-tube packed with wooden cases. | ||
| Inspection | With Hydraulic Testing, Ultrasonic testing or X-ray Test | |
| Certificate | ISO9001/2000 | |
| TPI | TUV, SGS, BV, Lloyd's, etc. | |
| Payment: | L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union, | |
| Port of Shipment | Shanghai port in China | |
ASTM A209 Grade T1a Alloy-Steel Boiler and Superheater Tubes
Standard:ASTM A209/A209M
Standard Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
ASTM A209 Grade T1a Seamless Steel Tubes covers minimum-wall-thickness, seamless, carbon-molybdenum alloy-steel,boiler and superheater tubes.
ASTM A209 Grade T1a Alloy-Steel Boiler and Superheater Tubes Quick Details
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 0.9 mm--12.7 mm.
Outer diameter (OD): 12.7 mm--127 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
Additional Info
Port of Shipment: Tianjin, China
Payment Terms:T / T, LC
Delivery: 7-15 days after payment
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
Materials and Manufacture
The steel shall be killed.
ASTM A209 Grade T1a Alloy-Steel Boiler and Superheater Tubes are made by the seamless process and shall be either hot-finished or cold-finished, as specified.
HeatTreatment
Hot-finished ASTM A209 Grade T1a Boiler and Superheater Tubes are heat treated at a temperature of 1200 °F [650 °C] or higher.
Cold-finished tubes , after the final cold finishing, are heat treated at a temperature of 1200 °F [650 °C] or higher, or tubing may be furnished in the full-annealed, isothermal annealed, or normalized and tempered condition.
Chemical Composition Of ASTM A209 Grade T1a
| Element | Composition, % |
| Grade T1a | |
| Carbon | 0.15-0.25 |
| Manganese | 0.30-0.80 |
| Phosphorus, max | 0.025 |
| Sulfur, max | 0.025 |
| Silicon | 0.10-0.50 |
| Molybdenum | 0.44-0.65 |
| Grade T1a | |
| Tensile strength, min, ksi [MPa] | 53 [365] |
| Yield strength, min, ksi [MPa] | 38 [195] |
| Elongation in 2 in. or 50 mm, min, % | 30 |
| For longitudinal strip tests a deduction shall be made for each 1 ⁄ 32 -in. [0.8-mm] decrease in wall thickness below 5 ⁄ 1 6 in. [8 mm] from the basic minimum elongation of the following percentage | 1.50 A |
| When standard round 2-in. or 50-mm gage length or smaller proportionally sized specimen with the gage length equal to 4D (four times the diameter) is used | 22 |
| Brinell Hardness Number (Tubes 0.200 in. [5.1 mm] and over in Wall Thickness), HBW | 153 |
| Rockwell Hardness Number (Tubes less than 0.200 in. [5.1 mm] in Wall Thickness), HRB | 81 |
| Wall Thickness, % | ||||||||
| Outside Diameter in. [mm] | 0.095 [2.4] and Under | Over 0.095 to 0.150 [2.4 to 3.8], incl | Over 0.150 to 0.0180 [3.8 to 4.6], incl | Over 0.180 [4.6] | ||||
| Over | Under | Over | Under | Over | Under | Over | Under | |
| Seamless, Hot-Finished Tubes | ||||||||
| 4 [100] and under | 40 | 0 | 35 | 0 | 33 | 0 | 28 | 0 |
| Over 4 [100] | .... | .... | 35 | 0 | 33 | 0 | 28 | 0 |
| Seamless, Cold-Finished Tubes | ||||||||
| Over | Under | |||||||
| 1 1 ⁄ 2 [38.1] and under | 20 | 0 | ||||||
| Over 1 1 ⁄ 2 [38.1] | 22 | 0 | ||||||
| Pecified Outside Diameter,in. [mm] | Permitted Variations, in. [mm] | |
| Over | Under | |
| Hot-Finished Seamless Tubes | ||
| 4 [100] or under | 1 ⁄ 64 [0.4] | 1 ⁄ 32 [0.8] |
| Over 4 to 7 1 ⁄ 2 [100 to 200], incl | 1 ⁄ 64 [0.4] | 3 ⁄ 64 [1.2] |
| Over 7 1 ⁄ 2 to 9 [200 to 225], incl | 1 ⁄ 64 [0.4] | 1 ⁄ 16 [1.6] |
| Cold-Finished Seamless Tubes | ||
| Under 1 [25] | 0.004 [0.1] | 0.004 [0.11] |
| 1 to 1 1 ⁄ 2 [25 to 40], incl | 0.006 [0.15] | 0.006 [0.15] |
| Over 1 1 ⁄ 2 to 2 [40 to 50], excl | 0.008 [0.2] | 0.008 [0.2] |
| 2 to 2 1 ⁄ 2 [50 to 65], excl | 0.010 [0.25] | 0.010 [0.25] |
| 2 1 ⁄ 2 to 3 [65 to 75], excl | 0.012 [0.3] | 0.012 [0.3] |
| 3 to 4 [75 to 100], incl | 0.015 [0.38] | 0.015 [0.38] |
| Over 4 to 7 1 ⁄ 2 [100 to 200], incl | 0.015 [0.38] | 0.025 [0.64] |
| Over 7 1 ⁄ 2 to 9 [200 to 225], incl | 0.015 [0.38] | 0.045 [1.14] |
| Method of Manufacture | Specified Outside Diameter, in.[mm] | Cut Length, in. [mm] | |
| Over | Under | ||
| Seamless, hot-finished | All sizes | 3 ⁄ 16 [5] | 0 [0] |
| Seamless, cold-finished | Under 2 [50.8] | 1 ⁄ 8 [3] | 0 [0] |
| 2 [50.8] or over | 3 ⁄ 16 [5] | 0 [0] | |
| 2 [50.8] or over | 3 ⁄ 16 [5] | 0 [0] | |
