| 原産地: | 中国(本土) | 銘柄: | 雅 | モデル番号: | 1/2 "-4" | 標準: | ANSI | astm a320: | l7 L7M l43 b8 B8M B8Tスタッドボルト |
包装
| 包装: | 約。 25kg/カートン、 woddenパレット |
We mainly supply ASTM A193 Gr. L7, L7M, L43, B8, B8M, B8T stud bolts.
The finish treatment includes plain, black oxided, phosphated, Zinc plated, Hot dip galvanized, Cadmium plated, PTFE/Teflon, etc.
Our products have been widely used in oil&gas engineering, petro-chemical engineering, power station, offshore engineering, nuclear engineering, heavy machinery, skyscraper etc.
| Specification | Class | Material | Mechanical Properties | ||||||
| Nominal Size Range (in.) | Minimum Tempering Temperature °F | Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa] (0.2 % offset) | Elongation in 2 in. or 50 mm min, % | Reduction of Area, min, % | Hardness max | |||
| ASTM A320 Grade L7 | Bolts, Screws, Studs for Low-Temperature Service | AISI 4140 4142 or 4145 | 2-1⁄2 and underA | 1100 | 125 | 105 | 16 | 50 | 321HBW or 35HRC |
| ASTM A320 Grade L43 | AISI 4340 | 4 and underA | |||||||
| ASTM A320 Grade L7M | AISI 4140 4142 or 4145 | 2-1⁄2 and underA | 1150 | 100 | 80 | 18 | 235HBWB or 99HRB | ||
| ASTM A320 Grade B8 | Class 1 Class 1A | AISI 304 | all diameters | -- | 75 | 30 | 30 | 50 | 223HBWD or 96HRB |
| ASTM A320 Grade B8T | AISI 321 | ||||||||
| ASTM A320 Grade B8M | AISI 316 | 192HBW or 90HRB | |||||||
| ASTM A320 Grade B8 | Class 2 | AISI 304 AISI 321 | 3⁄4 and under | -- | 125 | 100 | 12 | 35 | 321HBW or 35HRC |
| over 3⁄4 to 1 incl | -- | 115 | 80 | 15 | 30 | ||||
| ASTM A320 Grade B8T | over 1 to 11⁄4 incl | -- | 105 | 65 | 20 | 35 | |||
| over 11⁄4 to 11⁄2 inclA | -- | 100 | 50 | 28 | 45 | ||||
| ASTM A320 Grade B8M | AISI 316 | 3⁄4 and under | -- | 110 | 95 | 15 | 45 | ||
| over 3⁄4 to 1 incl | -- | 100 | 80 | 20 | 45 | ||||
| over 1 to 11⁄4 incl | -- | 95 | 65 | 25 | 45 | ||||
| over 11⁄4 to 11⁄2 inclA | -- | 90 | 50 | 30 | 45 | ||||
