ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Zhangjiagang Hua Dong Energy Technology Co., Ltd.
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34CrMo4 Cold Drawn SS Boiler Tube Mechanical DIN 2391 Seamless/High Pressure
(1) Product Name : Hot Rolled / Hot expansion Seamless Stainless Steel Boiler Tubes
(2) Brand : Jiangsu HDT
(3) Specification: O.D : 60.3mm-914.4mm W.T : 3.91mm-59.54mm
(4) Standard :
ASTM A106-B ASTM A53-B API 5L-B
API 5L, X42, X52, and 5CT ,J55 ,K55
SAE1020 ,SAE1045
JIS G4051, S20C ,S45C, JIS G3454, JIS 3454 ,STPG42
DIN 17175 ST 45-8, ST 52
(5) Tolerance: OD :+1% / -1% WT: +12.5% / -10%
(6) Technics : hot rolled .or cold rolled
(7) Package: bundles,seaworthy wooden cases,container
(8) Ends:bevel or plain
(9) Coating: Internally bare, externally varnished
Specifications:
Production process of hot rolled tubes :
Hot rolling → heating → piercing → three roller helical rolling, tandem rolling or extrusion → tube knockout → sizing or tube diameter reduction → cooling → semi-finished hot rolled seamless pipe → straightening → water pressure test → labeling → warehousing.
Classifications :
Hot rolled seamless steel tubes can be classified into the common steel pipe, low and medium pressure boiler seamless steel tube, high pressure boiler seamless pipe, stainless steel hot rolled pipe, and more.
Advantages :
Due to our adoption of hot rolling process, the original casting structure of the steel slab for making hot rolled pipe is destroyed. This means that the crystalline grains of steel material are refined, and the defects of the microstructure of steel slab are eliminated, which results in improved mechanical performance and denser microstructure of steel materials along the rolling direction.
Hence, our hot rolled seamless steel pipe features good mechanical property and superior intensity.
Regular Hot Rolled Tube Sizes:
(Or per customers’ requirements)
| OD × WT (mm) | OD × WT (mm) | OD × WT (mm) | OD × WT (mm) | OD × WT (mm) |
| 12×1.5 | 133 ×4～12 | 406.4×6～25 | 73×4-4.5-5-6-7-8-9-10-12-15 | 219×30-40 |
| 14×1.5-2.5-3 | 141.3×4～12 | 426 ×6～25 | 76×4-4.5-5-6-7-8-9-10-12-14 | 245×8-10-14-17-20-22 |
| 16×1.5-2.5-4 | 159 ×4～12 | 457 ×6～38 | 83×4.5-5-10/ 12 14 16 18 20 | 245×25-28-30-34-40 |
| 18×2.3-4-5 | 165 ×4～20 | 508 ×6～38 | 89×4.5-8-10/12-14 16 -18 20 | 273×7-9-12-15-18-20-25 |
| 20×2.5-3-5 | 168.3×4～20 | 530 ×6～40 | 95×4.5-6-8/10-12-14-16-20 | 273×30-35-38-40 |
| 24×2.5-3-4-5-6 | 177.8×4～22 | 559 ×6～40 | 102×4.5-5-6-7-8-10-12-14-16-20 | 299×8-12-16-20-24-28 |
| 25×2.5-3-4-5-6 | 323.8×6～25 | 610 ×6～40 | 108×4.5-5-6-7-8-10/12-14-18-20-22 | 299×30-32-36-38-40 |
| 28×3-3.5-4-5-6 | 340 ×6～25 | 630 ×6～40 | 114×4.5-5-6-7-8-10-12-14-18-20 | 325×8-12-14-18-38 |
| 32×3.5-4-5-6-8 | 355.6×6～25 | >630×6～44 | 121×4.5-5-6-7-8-10-12-14-16-20 | 325×28-32-34-38 |
| 34×4-5-6-8 | 377 ×6～25 | <914×6～60 | 127×4.5-5-6-7-8-10-12-14-16-20 | 351×10-16-20-25-40 |
Applications:
Transportation of oil,gas or fluid,Construction,Electricity,Machine building industy,Chemical industy,Petroleum,Traffic, etc
