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Product Description
High Strength Hydraulic Pipe
Hydraulic piping systems can be divided into two types: non-welded and welded. The main connectors in non-welded connections are flanges and joints. Flanges are divided into welded and non-welded (HS flange system). The range of joints includes: ferrule joints, HS extruded pipe end forming, JIC37° flared joints, etc. In addition, the range of pipe materials used in hydraulic piping systems is very wide: from carbon steel to stainless steel, from hot-rolled to cold-drawn (seamless) precision steel pipes, etc.
Considering the high requirements of the hydraulic system for cleanliness, quality and reliability within the system, we recommend:
* The entire hydraulic piping system uses welding connection technology
* The steel pipe uses seamless precision carbon steel pipes and (or) austenitic stainless steel pipes.
* The steel pipe with a diameter greater than 42mm adopts a flared flange connection system.
* The steel pipe with a diameter less than 42mm adopts the most advanced HS pipe end extrusion joint connection (select according to the specific application).
This technical information is the general principle in the design of hydraulic piping systems. In the specific piping system design, please choose according to the environment, customer's technical requirements, and local actual conditions.
DIN 2413/I and DIN 2413/III Steel pipe
All working pressures are based on DIN 2413/I and DIN 2413/III for straight tubes and pipes.
The yield point and tensile stress value determine the maximum allowable working pressure and the required wall thickness.
DNV Rules
All working pressures are based on Det Norske Veritas rules for classification of ships, new building part 4, Chapter 1, Section 6 and mobile offshore units drilling plant (drill) Part 6, chapter 5, Section 6 for bent tubes and pipes.
Before delivery, the actual yield point and tensile stress values are confirmed on the material certificate.
Models & Specifications
| Part No | 0.D x WT | W.P.bar | B.P.bar | kg/m | |||||
| DNV | 2 DIN 24131 | 3 DIN 2413Ⅲ | 4 DIN 24131 | ||||||
| 14X2ST52.4NBK 15X1.5ST52.4NBK | 14x2.0 15×1.5 | 411 259 | 571 400 | 456 330 | 1371 959 | 0.59 0.50 | |||
| 15X2ST52.4NBK 16X1.5ST52.4NBK | 15×2.0 16x1.5 | 381 242 | 533 375 | 429 311 | 1279 899 | 0.61 0.54 | |||
| 16X2ST52.4NBK 16X2.5ST52.4NBK | 16×2.0 16×2.5 | 355 475 | 500 624 | 404 493 | 1199 1499 | 0.69 0.83 | |||
| 18X1.5ST52.4NBK 18X2ST52.4NBK | 18x1.5 18×2.0 | 214 313 | 333 444 | 279 364 | 800 1066 | 0.61 0.79 | |||
| 20X2ST52.4NBK 20X2.5ST52.4NBK | 20x2.0 20×2.5 | 279 371 | 400 500 | 330 404 | 959 1199 | 0.89 1.08 | |||
| 20X3ST52.4NBK 22X1.5ST52.4NBK | 20x3.0 22 x1.5 | 467 173 | 599 272 | 476 231 | 1439 654 | 1.25 0.76 | |||
| 22X2ST52.4NBK 25X2ST52.4NBK | 22×2.0 25x2.0 | 252 220 | 363 320 | 303 269 | 872 768 | 0.99 1.13 | |||
| 25X2.5ST52.4NBK 25X3ST52.4NBK | 25×2.5 25x3.0 | 291 365 | 400 480 | 330 390 | 959 1151 | 1.39 1.63 | |||
| 28X2ST52.4NBK 28X3ST52.4NBK | 28x2.0 28x3.0 | 195 322 | 285 428 | 242 352 | 685 1028 | 1.28 1.85 | |||
| 30X2ST52.4NBK 30X3ST52.4NBK | 30x2.0 30x3.0 | 182 299 | 266 400 | 226 330 | 640 959 | 1.38 2.00 | |||
| 30X4ST52.4NBK 35X2ST52.4NBK | 30x4.0 35×2.0 | 424 155 | 533 228 | 429 196 | 1279 548 | 2.56 1.63 | |||
| 35X3ST52.4NBK 38X3ST52.4NBK | 35x3.0 38x3.0 | 254 233 | 343 315 | 286 265 | 822 757 | 2.37 2.59 | |||
| 38X4ST52.4NBK 38X5ST52.4NBK | 38x4.0 38x5.0 | 327 426 | 421 526 | 346 424 | 1010 4262 | 3.35 4.10 | |||
| 39X7.5ST52.4NBK 42X2ST52.4NBK | 39x7.5 42×2.0 | 673 128 | 768 190 | 590 164 | 1845 457 | 5.86 1.97 | |||
| 42X3ST52.4NBK 42X4ST52.4NBK | 42x3.0 42 x4.0 | 209 293 | 285 381 | 242 316 | 685 914 | 2.89 3.75 | |||
| 46X8ST52.4NBK 50X5ST52.4NBK | 46×8.0 50×5.0 | 601 315 | 695 400 | 541 330 | 1669 959 | 7.84 5.55 | |||
| 56X8.5ST52.4NBK 60X5ST52.4NBK | 56×8.5 60x5.0 | 516 259 | 607 333 | 481 279 | 1456 800 | 9.96 6.78 | |||
| 60X6ST52.4NBK 60X10ST52.4NBK | 60x6.0 60x10.0 | 319 578 | 400 666 | 330 522 | 959 1599 | 8.04 12.30 | |||
| 66X8.5ST52.4NBK 72X7ST52.4NBK | 66x8.5 72×7.0 | 429 313 | 515 389 | 415 322 | 1236 933 | 12.05 11.22 | |||
| 75X5ST52.4NBK 80X10ST52.4NBK | 75x5.0 80x10.0 | 205 418 | 266 500 | 226 404 | 640 1199 | 8.63 17.21 | |||
| 90X5ST52.4NBK 97X12ST52.4NBK | 90x5.0 97×12.0 | 169 416 | 222 494 | 190 401 | 533 1187 | 10.48 25.15 | |||
| 115X15ST52.4NBK 130X15ST52.4NBK | 115x15.0 130×15.0 | 444 388 | 521 461 | 420 376 | 1251 1107 | 36.95 42.54 | |||
| 150X15ST52.4NBK 190X20ST52.4NBK | 150x15.0 190×20.0 | 332 353 | 400 421 | 330 346 | 959 1010 | 49.94 83.84 | |||
| 250X25ST52.4NBK | 250×25.0 | 335 | 400 | 330 | 959 | 138.71 | |||
1 DNV: Bended pipe including manufacturing and corrosion tolerances.
2 DIN 2413 I static straight pipe including manufacturing tolerance.
3 DIN 2413III dynamic straight pipe including manufacturing tolerance.
4 Burst pressure according to DIN 2413 I including manufacturing tolerance.
