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OD Size Range: >38mm
Thickness Size Range: 3-80mm
Material: 10#, 20#, 35#, 45#, 16Mn, 27SiMn, 12Cr1Mov, 15CrMo
Classification:
Low and medium pressure boiler steel pipes
High pressure boiler steel pipes
Alloy steel pipes
Stainless steel pipes
Petroleum cracking pipes
Geological steel pipes and other steel pipes, etc.
The seamless steel pipe is made of perforated whole round steel, and the steel pipe without weld seam on the surface is called seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and pipe jacking. According to the cross-sectional shape, the seamless steel pipe is divided into two types: round and special-shaped. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemicals, boiler pipes, bearing pipes and high-precision structural steel pipes for automobiles, tractors and aviation.
Standard | ASTM | EN | JIS | GB |
ASTM A106 ASTM A178 ASTM A210 ASTM A369 ASTM A53 ASTM A135 ASTM A524 ASTM A333 ASTM A334 ASTM A 250 ASTM A209 ETC | EN 10216-2-2002 EN 10217-2-2005 EN 10216-1-2002 EN 10217-1-2002 ETC | JIS G3454-2005 JIS G3455-2005 JIS G3461-2005 JIS G3467-1988 JIS G3456-2004 JIS G3460-1988 JIS G3464-1988 JIS G3458-2005 JIS G3462-2004 ETC | GB 9948-2006 GB 6479-2000 GB3087-1999 GB 5310-1995 ETC | |
Material | Carbon steel grade: ASTMA179,A192,A178 GR.C,A210 A1,ASTM A210 C,DIN 17175 ST35.8, ASTM A53(A,B),ASTM A106(A,B,C); 10#,20G,20mnG,25MnG,,19Mn5,ST45.8-III Alloy steel grade: ASTM A213 (T2,T11,T12,T22,T9),ASTM A200 T5,ASTM A199 (T11,T22), ASTM A335( P2,P12,P11,P22,P5,P9,P23,P91), 16Mn,Q345A,Q345B,Q345C,Q345D,Q345E,15CrMoG, 12CrMo,15CrMo, 13CrMo44,10CrMo910,12CrMo195,X12CrMo91,12Cr2Mo,1Cr5Mo,15Mo3,1 2Cr1MoVG, 12Cr2MoWVTiB,10Cr9Mo1VNb |
Production Process
The main production process of hot-rolled seamless steel pipe (main inspection process):
Tube blank preparation and inspection△→tube blank heating→piercing→tube rolling→steel reheating→fixed (reduced) diameter→heat treatment△→finished pipe straightening→finishing→inspection△ (non-destructive, physical and chemical, Taiwan inspection)→warehousing
Application
1. For buildings, there are many pipelines at the bottom, groundwater extraction when building buildings, boiler hot water transportation, etc.
2. Machining, bearing sleeves, processing machinery parts, etc.
3. Electrical: gas transmission, water power generation fluid pipeline.
4. Anti-static pipes for wind power plants, etc.
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