Grade API J55/A53(A;B)/16Mn SCH40 Hot Rolled Seamless Steel Pipe
Hot rolled seamless steel tubes
Hot rolled seamless steel tubes are classified into general steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel tubes, stainless steel tubes, petroleum cracking tubes, geological tubes and other steel tubes.
It can destroy the casting structure of steel ingot, refine the grain size of steel, and eliminate the defects of microstructure, so that the steel structure is compacted and the mechanical properties are improved. This improvement is mainly reflected in the rolling direction, so that the steel is no longer isotropic to a certain extent. Bubbles, cracks and looseness formed during casting can also be welded under high temperature and pressure.
Technological difference
1. Local buckling occurs in the section of cold-rolled shaped steel, so as to make full use of the bearing capacity of the bar after buckling; Local buckling of hot rolled section is not allowed.
2. The causes of residual stress in hot rolled steel and cold rolled steel are different, so the distribution on section is also very different. The residual stress distribution on cold-formed thin-wall section is curved, while that on hot-bound or welded section is thin film.
3. The free torsion stiffness of hot rolled section is higher than that of cold rolled section, so the torsion resistance of hot rolled section is better than that of cold rolled section.
| Material | TP304, 304L, 304H, 316, 316L, 321, 321H, 310S 317L, 347H, 31803, etc. |
| Standard | ASTM A53, ASTM A106/ASME SA106/ASTM A53/ASME SA53/ API 5L GR. B PSL 1, ASTM A500, JIS G3444, G3445, G3452, G3454, ETC... |
| Grade | 300 series |
| Size | OD 6mm-530mm WT: 1.00mm-20mm |
| Length | 4000-13000mm |
| Surface | Annealed/manual polished/mechanical polished |
| Process method | Hot-rolling |
| Application | Used in petroleum chemical, metallurgy, paper making, food, shipbuilding, environmental |
| Delivery time | Within 7-15 days after received down payment |
| Payment Terms | L/C T/T |
| Shipment Terms | FOB CFR CIF |
| MOQ | 5 tons |
| Origin | China |
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SHANDONG TONGMAO SPECIAL STEEL CO.,LTD is reputed at supplying stainless steel pipe,carbon steel seamless pipe,alloy steel pipe,hot-rolled steel pipe,cold rolled steel pipe,galvanized steel pipe,welded steel pipe,precision steel pipe,also supply steel plate,steel coil and lead sheet etc.
Our Company combined production,trade,the development of new products and services together,is one of the provincial large-scale iron and steel enterprises.Factory products standards are qualified to meet ISO/GB/ASTM/EN/BS/JIS etc.
The company in the long-term development process,we are in cooperation with Baosteel Group,Tianjin Steel Group,Baotou Steel Group,Panzhihua Iron and Steel Group,Taiyuan Iron and Steel Group,Anshan Iron and steel Ling,Daye Steel Group and other well-known domestic mills,and established long-term friendly cooperative relations with not only the domestic groups,but also abroad relations,Assab special steel,Japan's Hitachi,Japan Datong special ,and Germany steel,special steel,Austria special steel and other well-known foreign groups.
Our company insists the principle of honesty and trustworthiness,has received trust and support from both the domestic and foreign manufacturers.
We will always adhere to the belief of credibility is the life to develop international market,and try our best to be skilled,highly responsible team ,through win-win cooperation,to meet the brilliant tomorrow!
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