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| Quality | Fitting Grade | ASTM STANDARD | ||||
|---|---|---|---|---|---|---|
| Marking Symbol | Unified Numbering System |
|||||
| WP | UNS | Fitting | PIPE | Plate | Forging | |
| Carbon Steel | WPB | A234 WPB | A106 GrB A671 GrB60 A671 GrB65 |
A515 Gr60 A515 Gr65 A516 Gr60 A516 Gr65 |
A105 | |
| WPC | A234 WPC | A106 GrC A671 GrB60 A671 GrB65 |
A515 Gr60 A515 Gr65 A516 Gr60 A516 Gr65 |
A105 | ||
| WPL6 | A420 WPL6 | A333 Gr6 A671 GrC65 |
A516 Gr60 A516 Gr65 |
A350 LF2 | ||
| Alloy Steel | WPL3 | A420 WPL3 | A333 Gr3 | A516 Gr60 A516 Gr65 |
A350 LF3 | |
| WP1 | K12822 | A234 WP1 | A335 P1 | A387 Gr1 | A182 F1 | |
| WP11 | K11597 | A234 WP11 | A335 P11 | A387 Gr11 | A182 F11 | |
| WP12 | K11562 | A234 WP12 | A335 P12 | A387 Gr12 | A182 F12 | |
| WP22 | K21590 | A234 WP22 | A335 P22 | A387 Gr22 | A182 F22 | |
| WP23 | K41650 | A234 WP23 | A335 P23 | A387 Gr23 | A182 F23 | |
| WP5 | K41545 | A234 WP5 | A335 P5 | A387 Gr5 | A182 F5 | |
| WP9 | K90941 | A234 WP9 | A335 P9 | A387 Gr9 | A182 F9 | |
| WP91 | K90901 | A234 WP91 | A335 P91 | A387 Gr91 | A182 F91 | |
| WP92 | K92450 | A234 WP92 | A335 P92 | A387 Gr92 | A182 F92 | |
| Stainless Steel | WP304 304L |
S30400 | A403 WP304 | A312 TP304L A358 Gr304 |
A240 Type304L | A182 F304L |
| WP309 | S30900 | A403 WP309 | A312 TP309 | A240 Type309 | A182 F309 | |
| WP310 | S31000 | A403 WP310 | A312 TP310 | A240 Type310 | A182 F310 | |
| WP316 316L |
S31600 | A403 WP316 | A312 TP316L A358 Gr316 |
A240 Type316L | A182 F316L | |
| WP317 | S31700 | A403 WP317 | A312 TP317 | A240 Type317 | A182 F317 | |
| WP321 | S32100 | A403 WP321 | A312 TP321 | A240 Type321 | A182 F321 | |
| WP347 | S34700 | A403 WP347 | A312 TP347 | A240 Type347L | A182 F347 | |
| Duplex (Ferritic/Austenitic) Steel |
WPS31254 | S31254 | A403 WPS31254 | A312 S31254 | A240 S31254 | A182 F44 |
| WPS31803 | S31803 | A815 S31803 | A790 S31803 | A240 S31803 | A182 F51 | |
| WPS32205 | S32205 | A815 S32205 | A790 S32205 | A240 S32205 | A182 F60 | |
| WPS32750 | S32750 | A815 S32750 | A790 S32750 | A240 S32750 | A182 F53 | |
| WPS32760 | S32760 | A815 S32760 | A790 S32760 | A240 S32760 | A182 F55 | |
| Martensitic Steel | WP410 | S41000 | A815 WP410 | A268 TP410 | A240 S41000 | A182 F6a |
| High Strength Low Alloy Steel |
WPHY42 | A860 WPHY42 MSS SP-75 WPHY42 |
API 5L-X42 | API 5L-X42 | A694 F42 | |
| WPHY46 | A860 WPHY46 MSS SP-75 WPHY46 |
API 5L-X46 | API 5L-X46 | A694 F46 | ||
| WPHY52 | A860 WPHY52 MSS SP-75 WPHY52 |
API 5L-X52 | API 5L-X52 | A694 F52 | ||
| WPHY56 | A860 WPHY56 MSS SP-75 WPHY56 |
API 5L-X56 | API 5L-X56 | A694 F56 | ||
| WPHY60 | A860 WPHY60 MSS SP-75 WPHY60 |
API 5L-X60 | API 5L-X60 | A694 F60 | ||
| WPHY65 | A860 WPHY65 MSS SP-75 WPHY65 |
API 5L-X65 | API 5L-X65 | A694 F65 | ||
| WPHY70 | A860 WPHY70 MSS SP-75 WPHY70 |
API 5L-X70 | API 5L-X70 | A694 F70 | ||
| Nickel Alloy | WP20CB | N08020 | B366 N08020 B366 WP20CB |
B464 N08020 B729 N08020 |
B463 N08020 | B472 N08020 |
| WPNC | N04400 | B366 N04400 B366 WPNC |
B165 N04400 | B127 N04400 | B564 N04400 | |
| WPNCMC | N06625 | B366 N06625 B366 WPNCMC |
B444 N06625 B704 N06625 |
B443 N06625 | B564 N06625 | |
| WP904L | N08904 | B366 N08904 B366 WP904L |
B673 N08904 B674 N08904 |
B625 N08904 | B649 N08904 | |
| WPNICMCs | N08825 | B366 UNS N08825 B366 WPNICMCS |
B423 N08825 B704 N08825 |
B424 N08825 | B564 N08825 | |
