Active Member
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[China]
Address: No.199 Huanlou Road,Economic Development Zone,Kunshan City,Jiangsu
Contact name:
Suzhou Zhongyue Railway Material Co.,Ltd. |
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ASTM A193 Grade B7 Stud Bolts 5/8" to 2" Double End Thread Rod
Other Name:
double end bolt, thread rod, stud bolt, track bolt, rail bolt, railway special bolt , stud rod
Description:
Double end bolts are used to fix the tie plate or other things on the right position through a hole and fastened by nuts and washer at both ends. The diameter and the length of the thread rod are varying according to the requirements of the working environment.
Standard:
DIN, JIS, ISO, ANSI, ASTM, BS, AS
Application:
Railway, Mining, Bridge, Construction and so on
Specifications:
Grade:4.6/4.8/5.6/ 8.8/ 10.9
Dimensions:M20, M22, M24 M25, M27, M28, M30, M32, M40, M50and so on
| Brand | ZhongYue | |||
| Name | Railway bolt | |||
| Type | ASTM A193 Grade B7 Bolt | |||
| HEX Bolt | ||||
| Or the type by customers’ drawings | ||||
| Grade | 4.6 | 5.6 | 8.8 | 10.9 |
| Material | Q235 | 35# | 45# | 40Cr |
| Mechanical properties | Tensile strength: ≥400Mpa | Tensile strength:≥500Mpa | Tensile strength:≥800Mpa | Tensile strength:≥1000Mpa |
| Yield strength:≥240Mpa | Yield strength:≥300Mpa | Yield strength:≥640Mpa | Yield strength:≥900Mpa | |
| Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
| Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | |
| Surface | plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing | |||
| Standard refers | ASTM A193 B7 | |||
Production Procedure
inspect the raw material —— Wiredrawing —— Cutting the wire rod to length —making thread— Heat Treatment —— Surface treatment —— Final inspection —— Packaging —— Shipment
Finish:
| No | Surface treatment |
| 1 | plain oil |
| 2 | paint by different color |
| 3 | oxide Black |
| 4 | Zinc Plating |
| 5 | Hot Dip Galvanized |
| 6 | bitumenizing |
| 7 | wax |
| 8 | phosphatiert |
