High Pressure Seamless Boiler tube DIN2391C ST52.4 NBK + Phosphating Precision Cold Drawn DNV / GL Approved
Brand Name:YHSS, YUHONG
Certification:ABS, BV, LR,TUV,DNV,IEI,IGI
Model Number:10*1.0*6000MM etc
Minimum Order Quantity:200KGS
Delivery Time:10-30 days according to Order Detail
Place of Origin:CHINA, Marine class Approved
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Ningbo Zhejiang China
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20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
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High Pressure Seamless Boiler tube DIN2391C ST52.4 NBK + Phosphating Precision Cold Drawn DNV.GL Approved.
DIN2391 Precision Cold Drawn Seamless Pipes and Tubes, Gr St35 St45 St52 St37.4, Cold Finished Seamless Pipe use for Hydraulic and Pneumatic.
Delivery Status: NBK (+N) BKW (+LC) GBK (+A) BKS (+SR) BK (+C) OD x WT = 4~120 x 0.5~15mm
DIN2391 St52.4+N Phosphated Hydraulic Tube
Normalized NBK
The last cold forming process is followed by annealing above the
upper transformation point in a controlled
atmosphere.
Chemical Composition:
| Steel grade | Chemical composition, as a percentage by mass | |||||
| Symbol | Material number | C max. | Si max. | Mn | P max. | S max. |
| St 30 Si | 1.0211 | 0.10 | 0.30 | <=0.55 | 0.025 | 0.025 |
| St 30 Al | 1.0212 | 0.10 | 0.05 | <=0.55 | 0.025 | 0.025 |
| St 35 | 1.0308 | 0.17 | 0.35 | <=0.40 | 0.025 | 0.025 |
| St 45 | 1.0408 | 0.21 | 0.35 | <=0.40 | 0.025 | 0.025 |
| St 52 | 1.0580 | 0.22 | 0.55 | <=1.60 | 0.025 | 0.025 |
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V:
<=0,05%. | ||||||
| Steel grade | Chemical Composition(%): | ||||||
| Steel name | Steel number | C max | Si max | Mn | P max | S max | Al min |
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
High Pressure Seamless Boiler tube DIN2391C ST52.4 NBK + Phosphating Precision Cold Drawn DNV / GL Approved
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