API 20E Bolts
API 20E BSL 1 Bolting, API 20E BSL 2 Bolting, API 20E BSL 3 Bolting, API 20F BSL 2 Bolting, API 20F BSL 3 Bolting Suppliers in India.
Ranfit Metal & Alloys is a manufacturing and exporting firm that offers a wide range of API 20E Bolting, which has proven results as a filler wire in many applications. API 20E Bolt has, by virtue of its contents of tungsten, chromium, molybdenum, and controlled iron. API 20E standard specifies requirements for the qualification, production and documentation of Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries. The API 20E specification establishes three bolting specification levels (BSL-1, BSL-2 and BSL-3). These BSLs define ascending levels of technical, quality and qualification requirements. Increasing levels of severity reflect increased consequence of bolting failure.
To ensure material traceability, the raw material is procured only from steel mills. We manufacture to below bolting grades. Huge emphasis is laid on the traceability of the material using heat-numbers, heat lots and production lots. Qualification to a higher BSL shall qualify to a lower BSL. The following paragraphs describe the conditions which, when met, allow the bolting to meet the appropriate bolting type and BSL classification level.
API 20E Bolt Specification
| API 20E Bolting Specifications | ASTM 193 API 20E |
|---|---|
| API 20E Bolting size | 1.625 - 8 UNR - 2A |
| Typical Steel Grades | 4140, 4142, 4145, 4140H, 4142H, 4145H |
| Melting Route | Continuous, Ingot |
| Certification | Dual Certified As per ASTM & ASME Codes |
API 20E Bolting Material
| Stud Grade | Nut Grade | Steel Grade |
|---|---|---|
| ASTM A193 B7 | ASTM A194 2H | 4140 |
| ASTM A193 B7M | ASTM A194 2HM | 4140 |
| ASTM A320 L7 | ASTM A194 7 | 4140 |
| ASTM A320 L7M | ASTM A194 7M | 4140 |
API 20E Bolting Types
- Machined studs;
- Machined bolts, screws, and nuts;
- Cold formed bolts, screws, and nuts with cut or cold formed threads (BSL-1 only);
- Hot formed bolts and screws <1.5 in. (38.1 mm) nominal diameter;
- Hot formed bolts and screws ≥1.5 in. (38.1 mm) nominal diameter;
- Roll threaded studs, bolts, and screws <1.5 in. (38.1 mm) diameter;
- Roll threaded studs, bolts, and screws ≥1.5 in. (38.1 mm) diameter;
- Hot formed nuts <1.5 in. (38.1 mm) nominal diameter;
- Hot formed nuts ≥1.5 in. (38.1 mm) nominal diameter.
API 20E Bolting Heat Treatment requirements
| BSL1 Requirements | Manufacturing processes shall be performed so as to avoid the introduction of stress risers that can occur from sharp angles and tool marks. Threads may be cut or rolled. Unified National Threads shall be "R" (UNR controlled radius root) series. Furnace calibration shall be in accordance with API 6A, Annex M, SAE AMS 2750 or SAE AMS-H-6875. For induction or direct resistance heat treatment, calibration shall be in accordance with the manufacture’s written procedure. |
| BSL2 Requirements | ASTM A320 Grade L43 and ASTM A540, Grade B23 shall be double tempered. When threads are rolled, parts shall subsequently be stress relieved at a temperature within 50oF (28oC) of, but not exceeding the final tempering temperature. |
| BSL3 Requirements | Austenitizing temperatures shall not exceed 1700F (925C). Tempering temperatures for ASTM A193, Grade B7, ASTM A320, Grade L7, and Grade L43, and ASTM A540 Grade B23 shall not exceed 1300oF (700oC). |
API 20E Bolting Marking requirements
| Material Designation | Marking |
|---|---|
| ASTM A193 GRADE B7 | TB B7 |
| ASTM A193 GRADE B7M | TB B7M |
| ASTM A320 GRADE L7 | TB L7 |
| ASTM A320 GRADE L7M | TB L7M |
| ASTM A320 GRADE L43 | TB L43 |
| ASTM A194 GRADE 2H | TB 2H |
| ASTM A194 GRADE 4 | TB 4L |
| ASTM A194 GRADE 7 | TB 7L |
| ASTM A194 GRADE 2HM | TB 2HM |
| ASTM A194 GRADE 7M | TB 7M |
| ASTM A540 GRADE B22 | TB B22 |
| ASTM A540 GRADE B23 | TB B23 |
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Types of API 20E Bolting
API 20E Bolt
API 20E Stud Bolt
API 20E Square Bolt
API 20E U Bolt
API 20E Hex Bolt
