EN 1.4301 1.4845 Stainless Steel Seamless Pipe Tube DN10 - DN400 SCH40
EN 1.4404 1.4301 1.4845 Stainless Steel Seamless Pipe Tube / SS Pipe DN10-DN400 SCH40
Stainless steel pipe product introduction
Stainless steel pipe is a kind of hollow long round steel, widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation, and other industrial transmission pipeline and mechanical structure parts. In addition, it is lighter in weight with the same bending and torsional strength, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also often used as furniture and kitchen utensils
| Product Name: | stainless steel pipe |
| Place of Origin: | Shandong, China |
| Standard | ASTM, AiSi, DIN, EN, GB, JIS |
| Application | Chemical, electric power, boiler |
| Material | 201,202,304,316L,310S,309S,321,316Ti,410,420,430, |
| Thickness: | 1.0-100mm |
| Outer Diameter: | 10-600mm |
| Length: | 3-6meters or as customized |
| Surface: | polished / Pickled |
| Tolerance: | ±1% |
| Type: | Seamless or Welded |
| Processing Service: | Bending, Welding, Decoiling, Punching, Cutting |
| Terms of price: | FOB, CIF, CFR, EXW |
| Payment terms: | TT, Irrevocable LC at sight, Western union, Ali trade assurance |
Stainless Steel Tube & Pipe Tolerance
In the production process, because the actual size is difficult to meet the nominal pipe size requirement, that is, it is often larger or smaller than the nominal size, so the standard stipulates that there is a difference between the actual size and the nominal size of the stainless steel pipe.
A positive difference is called a positive deviation, and a negative difference is called a negative deviation.
Outside diameter (OD), wall thickness and length are three basic parameters in the process of manufacture and distribution for stainless steel tube & pipe, and these parameters have been standardized.
Outer diameter and wall thickness are particularly important, they are not only the basic support for meeting the design requirements of various types of applications such as strength, stiffness and fluid delivery, but also have a decisive influence on the subsequent processing, therefore, standards for stainless steel tube & pipe diameter and wall thickness of the manufacturing accuracy (tolerance) should been standardized.
What is Nominal Pipe Size and Actual Pipe Size
A. Nominal Pipe size: It is the nominal size specified in the standard such ASME B36.10m, ASME B36.19m, the ideal size that users and manufacturers hope to obtain, and the order size specified in the contract.
B. Actual Pipe size: It is the actual size obtained during the production process, which is often larger or smaller than the nominal size. This phenomenon of being larger or smaller than the nominal size is called deviation.
European Standard
European stainless steel tube & pipe standards specify 4 classes outer diameter and wall thickness in percentage or absolute value on the basis of nominal dimension.
Generally, larger diameter or heavy wall thickness stainless steel pipe use percentage, small diameter or thin wall thickness stainless steel tube use absolute value.
European Standard
European stainless steel tube & pipe standards specify 4 classes outer diameter and wall thickness in percentage or absolute value on the basis of nominal dimension.
Generally, larger diameter or heavy wall thickness stainless steel pipe use percentage, small diameter or thin wall thickness stainless steel tube use absolute value.
| Standard | Manufacturing Process & Type | Outer Diameter Tolerance | Wall Thickness Tolerance | Others | |
| OD (Mm) | Class | ||||
| EN10216-5 | Hot Finished Seamless Tube | 219.1-610 | D1 | +22.5%T,-15%T | T/D≤0.05 |
| T1 | T/D≤0.09 | ||||
| T2 | T/D>0.09 | ||||
| 30-219.1 | D2 | T1 | |||
| T2 | |||||
| Cold Finished Seamless Tubes | ≤219.1 | D3 | T3 | ||
| D4 | T4 | Agreement | |||
| EN10297-2 | Hot Finished Seamless Tube | D1 | T1 | ||
| D2 | T2 | Agreement | |||
| Cold Finished Seamless Tubes | D3 | T3 | |||
| D4 | T4 | Agreement | |||
| EN10217-7 | Welded Tubes | >168.3 | D2 | T3 | |
| ≤168.3 | D3 | T3 | |||
| D4 | T3 | Agreement | |||
| EN10296-2 | Welded Tubes | >168.3 | D2 | T3 | |
| ≤168.3 | D3 | T3 | |||
| ≤114.3 | D4 | T3 | Agreement | ||
| EN10312 | Welded Tubes | Series 1 | D4 | T3 | T=0.6-2 Mm |
| Series 2 | D3 – D4 | T3 – T4 | T=1-3 Mm | ||
From D1 to D4 class for outer diameter, and T1 to T4 for wall thickness tolerance comply to DIN EN ISO 1127 standard, stainless steel tubes – Dimensions, tolerances and conventional masses per unit length.
| Outside Diameter | Wall Thickness | ||
| Class | Tolerance | Class | Tolerance |
| D1 | ±1.5%, Or ±0.75 Mm Min. | T1 | ±15%, Or ±0.6 Mm Min. |
| D2 | ±1.0%, Or ±0.5 Mm Min. | T2 | ±12.5%, Or ±0.4 Mm Min. |
| D3 | ±0.75%, Or. ±0.3 Mm Min. | T3 | ±10%, Or ±0.2 Mm Min. |
| D4 | ±0.50%, Or ±0.1 Mm Min. | T4 | ±7.5%, Or ±0.15 Mm Min. |
| T5 | +/- 5.0 %, Or +/- 0.10 Mm Min. | ||
Application of Stainless Steel Pipe
Stainless steel pipe is an economic profile of steel, which is an important product of the steel industry. It can be widely used in life decoration and industry. Many people in the market are used to making stair handrails, window guards, railings, furniture, etc. The common materials are 201 and 304.
Widely used in furniture, petroleum, chemical, boiler gas, plumbing fixtures, aerospace, paper, automotive, food, packaging machinery, medical, decoration, furniture, railings, and other engineering, hardware processing, shipbuilding, power plants, and other industries.
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