Production process of seamless steel pipe

- Feb 17, 2021-

The production process of seamless steel pipe||The seamlessness of steel pipe is mainly completed by tension reducing, which is a continuous rolling process of hollow base material without mandrel. Under the premise of ensuring the welding quality of the main pipe, the welded pipe tension reducing process is to heat the welded pipe as a whole to above 950 degrees Celsius, and then roll it to various outer diameters and walls by a tension reducer (the tension reducer has 24 passes) For thick finished pipes, the hot-rolled steel pipes produced by this process are essentially different from ordinary high-frequency welded pipes. 

After being heated by the heating furnace, the metallographic structure and mechanical properties of the weld and the parent body can be completely consistent. In addition, through multiple passes The secondary tension reducing machine rolling and automatic control make the dimensional accuracy of the steel pipe (especially the roundness and wall thickness accuracy of the pipe body) better than similar seamless pipes. The fluid pipes produced in developed countries in the world have adopted a large number of welded pipe seamless technology in boiler pipes. With the development of society, the situation of domestic hot-rolled welded pipes gradually replacing seamless pipes has taken shape.


H032bdb441b2648ad9798d2d61938cee5XHTB1EE9pXUvrK1RjSszfq6xJNVXaU (1)

seamless steel tube
StandardASTM A335,ASTM A213,ASTM A106,JIS G3458,JISA3462,DIN17175,GB5310, GB9948, GB5310API 5L,AP175-79, DIN2I5L ,  Gr.B, ASTM A53 Gr.B,DIN17204
ASTM A179/A192/A213/A210 /370 WP91, WP11,WP22.
DIN17440, DIN2448,JISG3452-54.
MaterialASTM A335 P2, P12, P11, P22, P5, P9, P91,ASTM A213 T2, T11,T5,T9,T22, 4140,12CrMo,15CrMo,12Cr2Mo,1Cr5Mo,42CrMo4,1Cr9Mo,10CrMo910,
ASTM 1320,1335,1345,4119,4125,4130,4135,5120,5130,5132,5140,6120,6140API5L,Gr.A&B, X42, X46, X52, X56, X60, X65, X70, X80,
ASTM A53Gr.A&B,ASTM A106 Gr.A&B, ASTM A135,
ASTM A252, ASTM A500, DIN1626, ISO559, ISO3183.1/2,
KS4602, GB/T911.1/2,SY/T5037, SY/T5040
DescriptionSurface:Varnished,PE coated,galvanized
Length : as customer requirements
Wall Thickness: as customer requirements
Outer Diameter: as customer requirements
Trade termsPayment term:LC/TT/DP
Price term: Contact us
PackageStandard export seaworthy package or as required.
Export toIreland,Singapore,Indonesia,Ukraine,Saudi Arabia, Spain, Canada,USA,
Thailand,Korea,Italy,India,Egypt,Oman,Malaysia,Kuwait,Canada,Viet Nam,
Peru,Mexico,Dubai, Russia,etc
Delivery timePrompt delivery or upon your order quantity.
ApplicationApplies to petroleum,chemical industry,electric power,boiler,low temperature resistant,high temperature resistant,alloy steel pipe
also can be made according customer's required.
ContactIf you have any question,please feel free to contact me.



Company ProfileHff086a9afe8f4ab2bcd056d61381bedaT



Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

CSPG  has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking
The products usually packaged with the steel band. If you have advice for the package we can follow that.FAQ1. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

2.What can you buy from us?
steel pipe,square tube,steel plate,steel coil

3. Why should you buy from us not from other suppliers?
We do the steel business for more than 15 years. Our goods can customization with the demand of the customer. Good quality and reasonable price.

4. What services can we provide?
Accepted Delivery Terms: FOB,EXW,FCA,DDP;
Accepted Payment Currency:USD,EUR;
Accepted Payment Type: T/T,L/C,MoneyGram,Credit Card;
Language Spoken:English,Chinese,Japanese,Korean