Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of astm a193 b7 double‑end stud bolt in China. Welcome to buy bulk high quality astm a193 b7 double‑end stud bolt made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
ASTM A193 B7 double‑end stud bolts are high‑strength chromium‑molybdenum alloy steel fasteners (AISI 4140), quenched and tempered for high‑temperature and high‑pressure working conditions. Normally supplied matched with ASTM A194‑2H heavy hex nuts for flange joint assembly. Widely used for oil & gas, petrochemical, refinery, pressure vessel, pipeline and power plant projects. We provide EN10204 3.1 MTC mill test certificate with heat number traceable. Custom thread sizes and lengths are supported.
Material: AISI 4140 Cr‑Mo alloy steel, quenched & tempered heat treatment
Standard: ASTM A193 Grade B7; matching nut ASTM A194 Grade 2H Heavy Hex Nut
Thread: Metric / UNC / UNF thread
Surface options: Black finish, Hot‑dip galvanized HDG, PTFE‑Xylan coating
Typical Applications
- Flange bolting for pipelines
- Pressure vessels & heat exchangers
- Oil & gas refinery equipment
- Petrochemical plant
- Power station & energy projects
- Valve and heavy‑duty industrial equipment
Product Specification
| Item | Details |
|---|---|
| Product | Double‑End Stud Bolt |
| Standard | ASTM A193 Grade B7 |
| Material | AISI 4140 Chromium‑Molybdenum Alloy Steel |
| Heat Treatment | Quenched & Tempered |
| Companion Nut | ASTM A194 Grade 2H Heavy Hex Nut |
| Thread Type | Metric, UNC, UNF |
| Size Range | M8‑M72, 3/8"‑3" |
| Surface Finish | Black / HDG / PTFE‑Xylan |
| Certificate | EN 10204 3.1 MTC, heat number traceable |
FAQ
Q: What nuts match ASTM A193 B7 stud bolt?
A: Standard matching nut is ASTM A194 Grade 2H heavy hex nut.
Q: What surface finishes for A193 B7 studs?
A: Black finish, hot‑dip galvanized, PTFE‑Xylan coating are available.
Q: Are custom lengths acceptable?
A: Yes, we produce custom lengths and thread sizes according to your drawing.
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