Double Ended Stud
Double ended studs have threading on both end of piece and the middle part is unthreaded. Both side of double ended studs have equal threading length. Double ended studs are manufactured by using either bright bars or black rolled bars. Thread forming is done by process of thread cutting. Threading confirms to ASME B1.1 Class 2A for UN & UNC threads.
Sizes:-
| 5/8” x 11 UNC | 3/4” x 10 UNC | 7/8” x 9 UNC | 1” x 8 UNC |
| 1-1/8” x 8 UN | 1-1/4” x 8 UN | 1-3/8” x 8 UN | 1-1/2” x 8 UN |
| 1-5/8” x 8 UN | 1-3/4” x 8 UN | 1-7/8” x 8 UN | 2” x 8 UN |
| 2-1/4” x 8 UN | 2-1/2” x 8 UN | 2-3/4” x 8 UN | 3” x 8 UN |
Material Grades
- ASTM A193 Gr B7 & ASTM A194 Gr 2H
- ASTM A193 Gr B7M & ASTM A194 Gr 2HM
- ASTM A320 Gr L7 & ASTM A194 Gr 7
- ASTM A320 Gr L7M & ASTM A194 Gr 7M
Coating:
- Black finish, Xylan coating, PTFE coating, or as required.
Marking & Traceability:
- Marking as per ASTM requirements.
- Marking & traceability as per API 20E & API 20F for each lot.
Documentation, Traceability & Quality control records:
- Raw material Mill TC
- UT report
- MPI report (if applicable)
- Heat treatment details with graph
- Mechanical & Chemical test report
- Pre dispatch inspection report