seamless tubes
Product Details:
| Alloy Or Not | Is Alloy |
|---|---|
| Standard | DIN |
| Technique | Seamless |
| Specification | 26.7mm*2.87mm |
| Grade | ST37,ST44,ST52 |
| Usage | mechanical engineering purposes |
| Thickness | STD,SCH40,SCH60,SCH80 |
| Outer Diameter | DN15 to DN650 |
| Length | 5.8 meteres,6meters,12 meteres |
| Secondary Or Not | Is Secondary |
| Place of Origin | Shandong, China (Mainland) |
Payment & Shipping Terms:
| Minimum Order Quantity: | 25 Ton |
|---|---|
| Price: | FOB qingdao port or tianjin port USD 720~1450 |
| Packaging Details: | Packing: In bundles, Varnish coating, Ends can be bevelled or sqaure cut, End capped |
| Delivery Time: | 35 days |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 50,000 Ton per Month |
Detailed Product Description
1. Field of application
DIN 1629 seamless tubes of non alloy steels with special quality requirements
1.1 This standard applies to seamless circular tubes and pipes(hereinafter briefly referred to as "tubes") made of unalloyed steels as listed in table 1. These tubes are predominantly used in the constructin of chemical plant, vessels, pipework and for general mechanical engineering purposes. They are designed to meet high performance requirements. Normally there are no limiting vaiues or the maximum permissible working pressure of these tubes. The permissi l working temperature shall not exceed 300 are specified in Appendix A.)
The limits of application and other specifications given in this standard shall apply except in cases here other specifications are contained in codes of practice for specific fields of application, e.g. the Technische Regeln fur Dampfkessel (TRD) (Technical rules on steam boilers) or the Technische Regeln fur Druckbehalter (TRB)
(Technical rules on pressure vessels), AD-Merkblatter (AD Instrucation sheets).
Chemical composition ( cast analysis) of steels for seamless circular tuves subject to special repuirements
steel grade | Type of | chemical composition, % by mass | |||||
Symbol | Material number | C | P | S | N¹) | Addition of nitrogen fixing elements (e.g.not less than 0,020% AItotal | |
St37.0 | 1.0254 | R | 0.17 | 0.040 | 0.040 | 0.009²) | - |
St44.0 | 1.0255 | R | 0.21 | 0.040 | 0.040 | 0.009²) | - |
St52.0³) | 1.0421 | RR | 0.22 | 0.040 | 0.035 | - | Yes |
Mechanical properties of tubes in the as delivered condition at room ternperature
For wall thickness exceeding 65 mm, the values shall be agreed at the time of ordering
Steel grade | Upper yield stress ReH for wall thicknesses, in mm, | Tensile strangth N/mm² | Elongation after fracture A5 | ||||
Symbol | Material number | up to 16 | over 16 up to 40 | over 40 up to 65 | lonigtudinal | transverse | |
St 37.0 | 1.0254 | 235 | 225 | 216 | 350²) to 480 | 25 | 23 |
St 44.0 | 1.0256 | 275¹) | 265¹) | 255¹) | 420²) to 550 | 21 | 19 |
St 52.0 | 1.0421 | 355 | 345 | 335 | 500²) to 650 | 21 | 19 |
¹) For cold finished tube in the NBK condition (annealed above the upper transformation point under shielding gas or in a vacuum), minimum values of yield stress lower than these valued by 20N/mm² are permitted. | |||||||
seamless tubes
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Company Info
Shandong Liaocheng Zhongxing Steel Pipe Co., Ltd.
[China (Mainland)]
[Verified Member]
City: Liaocheng
Province/State: Shandong
Country/Region : China (Mainland)
Business Type:Manufacturer
Online Postings: Products