Shipbuilding
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Out Diameter 1/4 inch - 36 inch 6.35mm - 914.4mm |
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Wall Thickness 1.25mm - 50mm SCH10,SCH40,SCH60,XS,SCH80,STD,XXS |
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Types CS Seamless Pipe, SS Seamless Pipe Black Seamless Pipe, GI Seamless Pipe
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| Standard | ||
| GB standard | Seamless steel pipe for structural purpose | GB/T8162-2008 |
| Seamless steel pipe for liuid service | GB/TB8163-2008 | |
| Seamless steel tubes for low and medium boiler | GB/3087-1999 | |
| Seamless steel tubes for high pressure boiler | GB/5310-1995 | |
| Seamless carbon steel marine tubes | GB/T5312-1999 | |
| High-pressure seamless steel tubes for chemical fertilizer equipments | GB/6479-2000 | |
| ASTM standard | Black and hot-dipped zinc-coated steel pipes welded and seamless | ASTM A53 |
| Seamless carbon steel for high temperature service | ASTM A106 | |
| Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes | ASTM A179 | |
| Seamless carbon steel boiler tubes for high pressure | ASTM A192 | |
| Seamless Medium-carbon boiler and superheater tubes | ASTM A210 | |
| Seamless carbon for mechanical tubing | ASTM A519 | |
| API standard | Seamless steel pipe for casing | API Spec 5CT |
| Seamless steel pipe for line pipe | API Spec 5L | |
| DIN standard | Seamless steel tube for elevated temperture | DIN 17175 |
| Cold drawn seamless prevision pipe | DN2391 | |
| Seamless circular unalloyed steel tubes subject to special requirements | DIN 1629 | |
| Types | |
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Structure Purposes |
General structure and mechanical |
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Liquid Services |
Petroleum, gas and other fluids conveying |
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Low and Medium Pressure |
Steam and boiler manufacturing |
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Hydraulic Pillar Service |
Hydraulic support |
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Auto Semi-shaft Casing |
Auto sem-shaft casing |
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Line Pipe |
Oil and gas conveying |
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Tubing and Casing |
Oil and gas conveying |
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Drill Pipes |
Well drilling |
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Geological Drilling Pipes |
Geological drilling |
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Petroleum Cracking Tubes |
Furnace tubes, heat exchangers |
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Mexico
ASTM A500 Gr. 50 Ø12”x 10.31mmx12m 365 Tons |
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Spain
AISI 316L 219,1 mm X 5 mm 12060 meters |
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Singapore
Black Steel Pipe 1/2"-12" SCH40 3502 PCS |
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UAE
ASTM A106-B 2"-6" SCH40 1025.36 Tons |
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Nigeria
A-53 GR-B 1"-6" SCH40 / 80 20590 meters (Project) |
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Vietnam
DIN 2391 Φ3/4" SCH40 6m long 167 pcs |
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How to make seamless pipe
Seamless piping begins as a solid cylindrical hunk of steel called a billet. While still hot, billets are pierced through the center with a mandrel. The next step is rolling and stretching the hollow billet. The billet is precisely rolled and stretched until it meets the length, diameter and wall thickness as specified by the customer order.
Some seamless pipe types harden as they’re manufactured, so heat treatment after manufacturing is not required. Others do require heat treatment. Consult the specification of the seamless pipe type you’re considering to learn whether it will require heat treatment.
