| Customization: | Available |
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| Material: | Carbon Steel |
| Warranty: | According to Product |
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| 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 |
Application: Used for manufacturing superheated pipelines, the steam pipe, boiling water tube, flue tube, small flue tube, etc.of low, mediam pressure boiler, the general industry boiler.
Out Diameter Torlerances
| Standard | Out Diameter | Tolerance |
| GB3087 | ≤180 | ±1.0%(min: ±0.5mm) |
| GB5310 | ≤50 | ±0.5mm |
| >50 | ±1.0% |
Wall Thickness Tolerances
| Standard | Wall Thickness(mm) | Tolerance |
| GB3087 | 3-20 | +15%,12.5% |
| >20 | ±12.5% | |
| GB5310 | <3.5 | +15%,-10% |
| 3.5-20 | +15%,-10% | |
| >20 | ±10% |
Chemical composition and mechanical properties
| Standard | Grade | Chemical composition(%) | Mechanical properties | ||||||
| C | Si | Mn | P | S | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | ||
| DIN17175 | St35.8 | ≤0.17 | 0.10-0.35 | 0.40-0.80 | ≤0.030 | ≤0.030 | 360-480 | ≥235 | ≥25 |
| St45.8 | ≤0.21 | 0.10-0.35 | 0.40-1.20 | ≤0.030 | ≤0.030 | 410-530 | ≥255 | ≥21 | |
| Item | Details |
| Type | Seamless |
| Standard | ASTM A106.ASME SA106,API 5L ,ASTM A53 ,ASME SA53,DIN17175,DIN1629/DIN2448,ASTM A179,ASME SA179,ASTM A192,ASME SA192,ASTM A210,ASME SA210,ASTM A335 BS3059,BS3059 PART II GR.360,440,GR.620-460,GR.622-490,629-470 |
| Grade | B,X42,X46,X52,X56,X60.ASME SA179,ASME SA192,ASME SA210 A1 C ASME SA335-P5,P9,P11,P12,P15,P21,P22,P23,P91,P92. ASME SA213-T2,T5,T9,T11,T12,T17,T21,T22,T23,T24,T36,T91,T92 DIN17175,ST35.8,ST45.8,17MN4,19MN5,15MO3,13CRMO44,10CRMO910,14MOV63 EN10216-1,.P195TR1,P195TR2,P235TR1,P235TR2,P265TR1,P265TR2. EN10216-2,P195GH,P235GH,P265GH,16MO3,25CRMO4 (TC1,TC2) GBT5310,20G.20MNG,25MNG,15MOG,20MOG,12CRMOG,15CRMOG, 12CR2MOG,12CR1MOVG, |
| OD | 17.1-914mm |
| WT | 1.5-100mm |
| Length | 1-12.9m random length,or Fixed length( 5.8m,5.85m,6m.11.8m.12m) |
| Min.Order quantity | We can accept 1 pcs/size if we have stock. |
| Surface | ,Clear oil varnish.or self color |
| Ends | Plain ends,Bevels. |
| Payment term: | TT or LC |
| Package | Bundles or loose |
| Delivery time | Depends on the specific orders,normally 45days |
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