Cadmium Plated A193 B7 Threaded Stud Bolts
API 6A Flange Valve Wellhead All Thread Stud Bolts
Standard: IFI-136, ASME B16.5, DIN976
Inch Size: 1/4”-4” with various lengths
Metric Size: M6-M100 with various lengths
Other Available Grade:
ASTM A193/A193M B7, B7M, B16, B8 Class 1 & 2, B8M Class 1 & 2,
ASTM A320/A320M L7, L7M, L43, B8 Class 1 & 2, B8M Class 1 & 2, and so on.
Finish: Plain, Black Oxide, Zinc Plated, Zinc Nickel Plated, Cadmium Plated, PTFE etc.
Packing: Bulk about 25 kgs each carton, 36 cartons each pallet
Advantage: High Quality and Strict Quality Control, Competitive Price,Timely Delivery; Technical Support, Supply Test Reports
Please feel free to contact us for more details.
ASTM A193
Scope
Originally approved in 1936, this specification is heavily utilized in petroleum and chemical construction applications. The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature service. This specification includes fasteners intended for use in pressure vessels, valves, flanges, and fittings. Although, this material is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters above one inch.
Below is a basic summary of a few of the common grades. ASTM A193 covers a number of other standard specifications not covered in this description including B5, B6, and B16.
Grades
| B7 | Alloy steel, AISI 4140/4142 quenched and tempered |
| B8 | Class 1 Stainless steel, AISI 304, carbide solution treated. |
| B8M | Class 1 Stainless steel, AISI 316, carbide solution treated. |
| B8 | Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
| B8M | Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened |
Mechanical Properties
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 - 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 - 7 | 100 | 75 | 18 | 50 | |
| B8 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 - 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 - 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 - 1-1/2 | 100 | 50 | 28 | 45 | |
| B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
| 7/8 - 1 | 100 | 80 | 20 | 45 | |
| 1-1/8 - 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 - 1-1/2 | 90 | 50 | 30 | 45 |
Recommended Nuts and Washers
| Bolt Grade | Nuts | Washers |
| B7 | A194 Grade 2H | F436 |
| B8 Class 1 | A194 Grade 8 | SS304 |
| B8M Class 1 | A194 Grade 8M | SS316 |
| B8 Class 2 | A194 Grade 8 | SS304 |
| B8M Class 2 | A194 Grade 8M | SS316 |
Strain hardened nuts available as a supplementary requirement
Pressform is an industry leader and specialist in the manufacture and installation of Refractory Anchors – required in industrial high temperature kilns to ensure the reliable adherence of concrete linings to the interior surface of the kiln.
Pressform has been designing and manufacturing Refractory Anchors for 35 years and is the leading supplier of Refractory Anchors in Australia with an extensive range designed for any industrial application. Pressform also provides a full custom design and manufacture service to suit specific project requirements, as well as a specialised Stud Welding System designed to radically improve the efficiency of anchor installation.
The Pressform Stud Welding System has been designed to save client’s precious project time by increasing Refractory Anchor installation rate by 1000%. Traditional installation of Rod Lock and Rotor Lock Anchors has been implemented using conventional welding techniques at a rate of around 15 lugs per hour. The Pressform technique improves the rate to an impressive 150 lugs per hour.
With its extensive knowledge of industry, Pressform has also developed the patented Spring Locking Clip to provide the utmost security and ensure Anchors remain in position throughout the concreting process.
To ensure each lug conforms to the required weld integrity, Pressform has designed and produced a simple-to-use testing device. Lugs are supplied by Pressform and available in carbon steel, stainless steel and nickel alloys.
The revolutionary Pressform Stud Welding System is included as part of the full Refractory Anchor installation service provided by Pressform. Pressform’s team of experts will assess, install and test projects of any size across Australia to the highest standards. All welding is carried out to the required Australian Standards.
Alternatively, The Stud Welding System can be procured individually on a project by project basis and includes a mobile welder, with all necessary leads, welding hand pieces and ancillary equipment which can be securely packed into a robust container for transport to most industrial locations. Pressform will supply all the equipment and consumables required including the stud welder, welding guns, testing device, cables, spare parts, anchor wires, lugs and ceramics. All of which can be delivered to any location or worksite.
Contact Pressform to find out how the Stud Welding System can be applied to suit your Refractory Anchor requirements www.pressform.com.au
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