DIN 2448 yog tus qauv rau cov Hlau Hlau thiab Cov Hlauv; Qhov ntev, Cov Masses pa ib zaug ntev.
Tsaug ntau ntau hom thiab ntau thiab tsawg, lawv tuaj yeem siv tau rau cov laj thawj. Cov kav dej yog tsim los ntawm kub kub los yog txias cov duab.
Cov kav xa dej siv rau txhua lub tshav pob ntawm kev lag luam, cov qauv siv raws li nram no:
DIN 1629
DIN 17175
Mechanical zog | ||||||
Cov yeeb nkab hom | Cov qhab nia hlau | Npaj siab tshaj plaws Re los rau phab ntsa tuab hauv mm min | Tensile zog Rm MPa | Kev tawm lus A% min | ||
ROUND SEAMLESS CARBON STEEL PIPES RAU TSHWJ XEEB YUAV TSUM TAU St37.0, St44.0, St52.0 raws li DIN 1629 | 16 | 16 40 | 40 65 | 1 | t | |
St37.0 | 235 | 225 | 215 | 350-480 | 25 | 23 |
St44.0 | 275 | 265 | 255 | 420-550 | 21 | 19 |
St52.0 | 355 | 345 | 335 | 50-650 | 21 | 19 |
TSHUAJ LOM NEEG (LADLE ANALYSIS) | ||||||
Cov qhab nia hlau | Weld deoxidation hom (cov hlau tua hluav taws xwb) RR tshwj xeeb tua | C% | P% | S% | N% | Txuas ntxiv ntawm nitrogen losis tswvyim xws li min 0,020% tag nrho Al |
St37.0 | R | 0,17 | 0,040 | 0,040 | 0,009 | - |
St44.0 | R | 0,21 | 0,040 | 0,040 | 0,009 | - |
St52.0 | RR | 0,22 | 0,040 | 0,035 | - | YOG |
Kev sim | Kev ntsuam xyuas tau | Kev ua tiav kev ua tiav | Cov ntaub ntawv pov thawj ntawv pov thawj hom | |
Tsis yog | Hom | |||
1 | Tensile kuaj | 1 yeeb nkab ntawm cov khoom ua si 1 sim | Yuav tsum tau negotiated | DIN 50049 3.1.A LOS SIS DIN 50049 3.1.B LOS YOG DIN 50049 3.1 C |
2 | Ntiv nplhaib kuaj | Los ntawm ib tus yeeb nkab kawg rau kev soj ntsuam raws li 1 rau phab ntsa thickness ntawm 40mm, 1 sim | Yuav tsum tau negotiated | DIN 50049 3.1.A LOS SIS DIN 50049 3.1.B LOS YOG DIN 50049 3.1 C |
3 | Tightness testing | Tag nrho cov kav dej | Chaw Tsim Tshuaj | DIN 50049 2.1 |
4 | Kev soj ntsuam deg | Tag nrho cov kav dej | Yuav tsum tau negotiated | DIN 50049 3.1.A LOS SIS DIN 50049 3.1.B LOS YOG DIN 50049 3.1 C |
5 | Dimensional kuaj | Tag nrho cov kav dej | Yuav tsum tau negotiated | DIN 50049 3.1.A LOS SIS DIN 50049 3.1.B LOS YOG DIN 50049 3.1 C |
6 | Ntsuam xyuas | Tom qab kev sib cog lus | Chaw Tsim Tshuaj | DIN 50049 3.1.B |
