Seamless pipes are cylindrical steel products without any welding seams. They are manufactured through processes such as hot - rolling, cold - drawing, or extrusion. During hot - rolling, a billet is heated and then shaped into a pipe through a series of rolling mills. Cold - drawing involves pulling a pre - formed tube through dies to reduce its diameter and improve its dimensional accuracy, while extrusion forces the metal through a die to form the pipe.

Seamless pipes find extensive applications across multiple industries. In the oil and gas industry, they are used for transporting oil, gas, and other fluids over long distances due to their high pressure - bearing capacity. In the power generation sector, seamless pipes are applied in boiler systems to transfer high - temperature and high - pressure steam. They are also utilized in the construction of machinery, automotive manufacturing for components like drive shafts, and in the manufacturing of high - pressure pipelines in chemical plants.

High Pressure Resistance: Due to the absence of welding seams, seamless pipes have uniform wall thickness and structural integrity, enabling them to withstand extremely high internal pressures. This makes them ideal for applications where high - pressure fluid or gas transportation is required, such as in oil well drilling and high - pressure steam pipelines.
Excellent Strength and Durability: Seamless pipes are made from high - quality steel and undergo strict manufacturing processes, resulting in superior strength and durability. They can resist external impacts, corrosion, and wear, ensuring a long service life even in harsh operating environments.

Good Dimensional Accuracy: Through precise manufacturing techniques like cold - drawing, seamless pipes can achieve high levels of dimensional accuracy in terms of diameter, wall thickness, and straightness. This precision is crucial for applications that require seamless integration with other components, such as in automotive and machinery manufacturing.

Versatility in Sizes and Grades: Seamless pipes can be produced in a wide range of sizes, from small - diameter pipes used in precision instruments to large - diameter pipes for major infrastructure projects. 

Standard

AiSi ASTM GB JIS DIN

Grade

AP175-79, DIN2I5L,ASTM A106 Gr.B, ASTM A53 Gr.B.ASTM A179/A192/A213/A210 /370 WP91,WP11.WP22DIN17440,DIN2448JISG3452-5410#20#45#.0235.0345.0195.0215.0345C.0345AP11,.P12P22P91,P9215CrM0.Cr5Mo,10CrMo910.12CrMo.13CrMo44,30CrMo,A333 GR.1,GR.3,GR.6,GR.7,etc

Outside Diameter

21mm-1420mm

Thickness

1.65mm-200mm

Tolerance

±1%

Technique

Cold Rolled/Hot Rolled/Cold Drwan

ProcessingService

Bending, Welding, Decoiling, Cutting, Punching

End

Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket

Surface

Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation

Packing

1.In bundles with steel strips
2. In bundles+PVC blue package
3. In bulk .
4.According to customers requirements

Delivery Term

CFR CIF FOB

Payment Terms

30% TT deposit and 70% T/T or LC the balance

Delivery Time

7-15days, as negotiation

Main Product