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BE ERW Pipe, API 5L X56, 12 inch, 12 meters, SCH.STD, Standard API 5L PSL1 & ASME
Carbon steel pipe can be divided into seamless steel pipe, straight
seam steel pipe, spiral steel pipe, high frequency welded steel
pipe and so on. The raw material of rolling seamless carbon steel
pipe is round tube billet. The round tube embryo must be cut by
cutting machine to process the billet with a growth degree of about
1 meter, and sent to the furnace by conveyor belt for heating. The
billet is heated into the furnace at a temperature of about 1200
degrees Celsius. The fuel is hydrogen or acetylene. Furnace
temperature control is a key problem. After the round tube billet
is out of the oven, it must pass through the pressure perforation
machine to carry on the empty. The common perforator is conical
roller perforator, which has high production efficiency, good
product quality, large perforation diameter expansion and can wear
many kinds of steel. After perforation, the round tube billet has
been three-roll oblique rolling, continuous rolling or extrusion.
After extrusion, take off the pipe and set the diameter. The
diameter fixing machine rotates into the steel embryo through the
conical bit at high speed to form the steel pipe. The inner
diameter of the steel pipe is determined by the outer diameter
length of the drill bit. After the steel pipe is fixed, it enters
the cooling tower and is cooled by water spray. After cooling, the
steel pipe will be straightened. The steel pipe is straightened and
sent from conveyor belt to metal flaw detector (or hydraulic test)
for internal flaw detection. If there are cracks, bubbles and other
problems inside the steel pipe, it will be detected. Steel pipe
quality inspection but also through strict manual selection. After
quality inspection of steel pipe, spray the number, specification,
production batch number and so on with paint. And crane into the
warehouse.
Cold drawn (rolled) carbon steel seamless steel pipe: pipe billet →
heating → perforation → head → annealing → pickling → oiling
(copper plating), multi-pass cold drawing (cold rolling)→ billet
pipe heat treatment → straightening water pressure test (flaw
detection)→ marking and storage
Carbon steel seamless steel pipe is divided into hot rolled
(extruded) seamless steel pipe and cold drawn (rolled) seamless
steel pipe because of its different manufacturing technology. Cold
drawing (rolling) tube is divided into circular tube and
special-shaped tube.
standard | |
GB/T17396-1998 | Hot rolled seamless steel pipe for hydraulic prop |
GB3093-1986 | High pressure seamless steel pipe for diesel engine |
GB/T3639-1983 | Cold drawn or cold rolled precision seamless steel tubes |
GB/T3094-1986 | Steel pipe with special shaped steel pipe |
GB/T8713-1988 | Precision inner diameter seamless steel pipe for hydraulic and pneumatic cylinders |
GB13296-1991 | Stainless Steel Seamless Steel Pipe for Boiler and Heat Exchanger |
GB/T14975-1994 | Structural stainless steel seamless steel pipe |
GB/T14976-1994 | Stainless steel seamless steel pipe for fluid transportation |
GB/T5035-1993 | Seamless Steel Pipe for Auto Semi-shaft Casing |
API SPEC5CT-1999 | Specification for casing and tubing |