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Product detail:
cold finished carbon steel seamless boiler tube
Hi,this is maria,thanks very much for your interesting to our products,If you want such steel tubes and pipes,or the standard is not listed above,pls do not hesitate to contact me at once.pls tell me,it's my honor to service you!
Tel:+86-18921988727
Zhangjiagang Huadian Import & Export Co., Ltd is a company based in China, we have two factories, one factory manufactures steel tubes and the other factory produces power station equipment.
Jiangsu Dehai Group (Parent Company) | |
Zhangjiagang Huadian Im &Ex Co., Ltd (Subsidiary) | |
Zhangjiagang Huagang IndustrialCo.,Ltd (Factory)
| Specializes in the production of cold-drawn/cold-rolled precision seamless steel tubes,such as bright oil tubes etc. |
Zhangjiagang Huadian Power Equipment Co.,Ltd (Factory) | A manufacturer of power station boiler, industrial boiler, waste heat boiler, refusefired boiler, biomass boiler and the correlated pressure parts integrating the design, manufacture, installation, repair and maintance |
Features
| Name | cold finished carbon steel seamless boiler tube |
| Standard | Meet or exceed ASTM,ASME,API,ANSI and DIN standards. ASTM A106/A179/A192/A210/A213/A519 etc. DIN2391/DIN17175/EN10305 etc GB8162/GB8163/GB3639 etc |
| Application | Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic services. Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes. |
| Business scope | DIN series cold drawn precision seamless steel tubes DIN series cold rolled precision seamless steel tubes Related coated and galvanized steel tubes Rustproof phosphyorylated tube |
| Main characteric | No Oxidation Layer on the outer and inner walls; No Leakage under high pressure; No Crake under flating and flattening; No distortion after cold bending; High precision high cleanness; Excellent brightness cold drawn and hot finished Superior performance for high pressure and temperature uses Black finish and hot dip galvanized Excellent corrosion resistance |
Chemical composition:
| Steel grade | Chemical composition in weight % | |||||||
| Code number | Material number | C | Si | Mn | P max. | S max. | Cr | Mo |
| St 35.8 | 1.0305 | ≤0.17 | 0.10-0.35 | 0.40-0.80 | 0.040 | |||
| St 45.8 | 1.0405 | ≤0.21 | 0.10-0.35 | 0.40-1.20 | 0.040 | 0.040 | ||
| 19Mn5 | 1.0482 | 0.17-0.22 | 0.30-0.60 | 1.00-1.30 | 0.040 | 0.040 | ≤0.30 | |
| 15Mo3 | 1.5415 | 0.12-0.20 | 0.10-0.35 | 0.40-0.80 | 0.035 | 0.035 | 0.25-0.35 | |
| 13CrMo44 | 1.7335 | 0.10-0.18 | 0.10-0.35 | 0.40-0.70 | 0.035 | 0.035 | 0.70-1.10 | 0.45-0.65 |
Mechanical properties:
| Steel grade | Tensile strength
N/mm2 | Yield point for wall thickness in mm ≤16 >16≤40 >40≤60 N/mm2 minimum | Elogation at fracture minimum | ||||
| Code number | Material number | ||||||
| St 35.8 | 1.0305 | 360-480 | 235 | 225 | 215 | 25 | 23 |
| St 45.8 | 1.0405 | 410-530 | 255 | 245 | 235 | 21 | 19 |
| 15Mo3 | 1.5415 | 450-600 | 270 | 270 | 260 | 22 | 20 |
| 13CrMo44 | 1.7335 | 440-590 | 290 | 290 | 280 | 22 | 20 |
Designation | Symbol | Description |
Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming. (e.g. bending, expanding). |
Cold finished and stress-relieved | BKS | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
Annealed | GBK | The last cold forming process is followed by annealing in a controlled atmosphere. |
Normalized | NBK | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere |
Standards and Application
| DIN2391 | Seamless Precision Steel Tubes for mechanical and automotive engineering. |
| EN10305-1 | Seamless Steel Tubes for precision applications |
| DIN17175 | Seamless Tubes of Heat resistant Steels used in Boilers, Pressure vessels & equipment for service upto 600° C and at high pressures. |
| ASTM A106/SA106 | Seamless Carbon Steel Pipes for High - Temperature Service. |
| ASTM A179/SA179 | Seamless Cold-Drawn Low-Carbon Steel tubes for Heat-Exchanger and Condenser. |
| ASTM A192/SA192 | Seamless Carbon Steel Boiler Tubes for High-Pressure Service. |
| ASTM A210/SA210 | Seamless Medium-Carbon Steel Tubes for Boiler and Super heater. |
Delivery Conditions
BK,BKS,BKW,NBK,GBK( As drawn, quenched and tempered, normalized, annealed, stress-relieved)
As different requirements,It including pickling,etc. AS per Standard.
Other Test
1.Hydrostatic or Nondestructive Electric Test
2.Heat Treatment: according to Standard
3.Surface Condition:According to Standard.
4.Grain Size:According to standard
5.Sampling:flattening,flaring,grain size,Marking
