Large Diameter Seamless Pipe Classification
large diameter seamless pipe Classification
1、According to the production method, the seamless steel pipe can be divided into hot rolled seamless steel pipe, cold rolled seamless steel pipe, cold drawn seamless steel pipe, extrusion seamless steel pipe, pipe jacking and so on.
2、According to the section shape, the seamless steel pipe is divided into round and irregular two kinds, irregular pipe has square, oval, triangle, hexagonal, melon seed shape, star shape, with a variety of complex shapes. The maximum diameter is 900mm and the minimum diameter is 4mm.
3、According to different uses, there are thick wall seamless steel pipe and thin wall seamless steel pipe. Seamless steel pipe is mainly used for petroleum geological drilling pipe, petrochemical cracking pipe, boiler pipe, bearing pipe and automobile, tractor, aviation high-precision structural steel pipe.
Large Diameter Seamless Pipe Chemical Composition
| Grade | C | Mn | P | S | Si |
| ASME SA573 Grade 58 | 0.23 | 0.6-0.9 | 0.035 | 0.04 | 0.1-0.35 |
| ASME SA573 Grade 65 | 0.24 | 0.85-1.2 | 0.035 | 0.04 | 0.15-0.4 |
| ASME SA573 Grade 70 | 0.27 | 0.85-1.2 | 0.035 | 0.04 | 0.15-0.4 |
Large Diameter Seamless Pipe Mechanical Property
| Grade | Yield Strength (MPa) | Ultimate Tensile Strength (MPa) | Elongation at Break (%) |
| ASME SA573 Grade 58 | 220 | 415-550 | 21 |
| ASME SA573 Grade 65 | 240 | 415-530 | 20 |
| ASME SA573 Grade 70 | 290 | 485-620 | 28 |
Large Diameter Seamless Pipe Specification
| Product Name | large diameter seamless pipe |
| Standard | ASME A179,JIS G3461,DIN 17175 |
| Out Diameter | 1/2"-48"(6mm-1240mm) |
| Wall Thickness | 1mm-200mm |
| Length | 5.8-12m ,random length or fixed length |
| Heat Treatment | Anneal etc |
| Thecnical | Hot Rolled,Cold Drawn |
| Package | In Bundling,In Bulk |
| Suface Treatment | Oil Coating,Black Painted,Varnish,Anti-Corrosion |
| Payment Terms | T/T,L/C |
| Application | 1>Water Transportation 2>Supply Heat and Gas 3>Long Distance Transport Oil and Natural Gas 4>Agricultural Irrigation 5>Water Conservancy Project |
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Application
Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.
Our export country
We are a well known worldwide supply and export large diameter seamless pipe in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.
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