
Key Specifications
- Material/Alloy
- ASTM A193 B7 stud bolts with ASTM A194 2H heavy hex nuts — 5/8" to 2-1/2" diameter, zinc plated
- Standards
- ASTM A193 B7, ASTM A194 2H, ASTM B633-11 (client-specified zinc plating)
- Region
- Oil and gas job site — client and destination confidential
- Lead Time
- Supplied on time; ocean freight to job site
Overview
A new oil and gas client placed a large project order with Energy Materials Group: nearly 7,000 kg of A193 B7 stud bolts with A194 2H heavy hex nuts, ranging from 5/8" up to 2-1/2" in diameter. Every item was zinc plated to ASTM B633-11 to the client's specification. The order was supplied on time, packed in accordance with the client's requirements and ocean freighted to the job site.
Challenge
Large petrochemical projects need stud-bolt packages in many diameters and lengths, all matching the specified grade, coating and packing requirements. A nearly 7,000 kg requirement spanning 5/8" to 2-1/2" diameters leaves no room for substitution: the client's specification called for B7 bolting with 2H heavy hex nuts, zinc plated to ASTM B633-11, and packing that suited ocean freight to a job site.
Solution
EMG supplied the complete B7/2H package to the client's specification, coordinating zinc plating to ASTM B633-11 across the full size range. The components were packed in accordance with the client's requirements and shipped by ocean freight to the job site, arriving on time. The project demonstrates EMG's petrochemical stud-bolt supply across grades including B7, L7, B7M, L7M and B8M Class 1 and Class 2.

Results
- Nearly 7,000 kg of A193 B7 stud bolts and A194 2H heavy hex nuts supplied
- Full size range covered from 5/8" up to 2-1/2" diameter
- All items zinc plated to ASTM B633-11 to the client's specification
- Packing completed in accordance with the client's requirements
- Order supplied on time and ocean freighted to the job site
Compliance & Documentation
ASTM A193 B7 covers alloy steel bolting for high temperature or high pressure service, and ASTM A194 2H covers heavy hex nuts in the same service class; both are normally supplied in the hardened and tempered condition. ASTM B633-11, the 2011 edition specified by the client, covers electrodeposited zinc coatings on iron and steel articles. This case study records the supplied products and delivery outcome; it does not claim additional testing or certificate types not identified in the project account. For a similar requirement, provide the applicable material specification, coating requirement and edition, thread and dimensional requirements, packing specification and required inspection documents with your enquiry. On-time supply on this project is not a guaranteed lead time for future orders.
Products Supplied
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