Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener
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Product Highlights
- Wide Size Range: Available in sizes from M6 to M100 and 1/4' to 4' to meet diverse project needs.
- Customizable Length: Length can be tailored according to specific client requirements.
- Premium Coating Options: Offers Xylan, PTFE, Zinc, and other coatings for enhanced corrosion resistance.
- Multiple Material Grades: Includes ASTM A193 B7, B8, B8M, B8T, A453, A320, and A182 for various environments.
- Industry Certifications: Products are API, CE, TUV, and ISO certified for quality assurance.
- OEM Service Available: Customization from samples is supported for tailored manufacturing solutions.
- Fast Delivery: Standard delivery time is 2-4 weeks for efficient project execution.
- Robust Packaging: Packed in plywood cases or wooden boxes to ensure safe transport.
Product Attributes
- Customization
- Available
- Material
- Carbon Steel
- Type
- Round Head
- Model NO.
- SBN-012
- Connection
- Common Bolt
- Head Style
- Round
- Standard
- DIN, ANSI, GB, JIS, BSW, ASME, ISO, Hg
- Grade
- 10.9
- Application
- Machinery, Chemical Industry, Environmental, Building, B16.5 Flanges Connection
- Finish
- Xylan Coating
- Surface Treatment
- Xylan Coating
- Delivery
- 2-4 Weeks
- Thread
- Full Thread, Unc, Unf
- Length
- According to Client's Requirement
- Size Range
- M6-M100, 1/4"- 4"
- Transport Package
- Plywood Cases/Wooden Boxes
- Specification
- 5/8" X 105mm
- Trademark
- Qishine, QS
- Origin
- China
- HS Code
- 7318159090
- Package Size
- 25.00cm * 12.00cm * 12.00cm
- Package Gross Weight
- 12.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener
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Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener -
Quanzhou Unc ASTM A193 B7m Stud Bolt with 2hm Nut Flange Fastener
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Product Description
ABOUT US
Xiamen Qishine Industry Co., Ltd. is a Chinese company established in 2013. We are a leading fabrication services provider in industries such as Oil & Gas, Petroleum, Marine, Oilfield, Mining, and Heavy Industry, specifically for pipeline construction and maintenance.
Qishine is ideal choice for EPC companies and project contractors. Our company specializes in supplying a range of products including Fasteners, Flanges, Gaskets, Fittings, Valves, Pipes and Piping Spare Parts. Our products are API, CE, TUV and ISO certified. Products are widely used on oil rigs, new nuclear power plant, Chemical and Heavy Industry.
Qishine is proud as being a premium product supplier who works closely with our clients to achieve the best possible results. We have an experienced team, skilled labor force, and advanced facilities to ensure safe and efficient project completion, meeting deadlines and budget requirements.
Qishine: Your go-to solution for hassle-free project execution.
Stud Bolt and Nuts
The A193 B7 stud bolt is a fastener with threads on both ends. Its design involves screwing one end into a fixed component and installing a nut on the other end. In the petroleum and chemical industries, these products are used extensively for flange connections. The most common configuration involves a stud bolt with two nuts on either side, which serves as a replacement for the traditional bolt and nut assembly.
Without a doubt, as you know,there are various categories of double headed bolts. The type used for flange connection is called flange double bolt, which has a fully threaded, chambered ends. The theoretical length is measured from the thread. The continuous threaded stud bolt is very similar, except that it does not have a chamber end.
Stud Bolt Materials
The most common materials for stud bolts (for flanges) are ASTM A193 (grade B7, B8, B8M, B8T), ASTM A453 (grade 660), ASTM A320 (grade L7, L7M), and ASTM A182 (duplex and super duplex bolting). For aggressive fluids and environments, stud bolts can be coated with Xylan/PTFE, Zinc and other materials.
ASTM A193 Stud Bolts: Chemical Composition
| Physical Element | ASTM A193 grade B7 (AISI 4140) | ASTM A193 grade B8 (AISI 304) | ASTM A193 grade B8M (AISI 316) |
|---|---|---|---|
| Carbon | 0.38 - 0.48% | 0.08% max | 0.08% max |
| Manganese | 0.75 - 1.00% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 - 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.80 - 1.10% | 18.0 - 20.0% | 16.0 - 18.0% |
| Nickel | absent | 8.0 - 11.0% | 10.0 - 14.0% |
| Molybdenum | 0.15 - 0.25% | absent | 2.00 - 3.00% |
ASTM A193 Stud Bolts: Mechanical Properties
| ASTM A193 | Size | Min Tensile Strength (KSI) | Min Yield Strength (KSI) | Min Elongation (%) | RA % min | Max HBW | Max HRC |
|---|---|---|---|---|---|---|---|
| ASTM A193 grade B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 | 321 | 35 |
| 2-5/8 - 4 | 115 | 95 | 16 | 50 | |||
| 4-1/8 - 7 | 100 | 75 | 18 | 50 | |||
| ASTM A193 grade B8 Class 1 | All | 75 | 30 | 30 | 50 | 223 | 35 |
| ASTM A193 grade B8M Class 1 | All | 75 | 30 | 30 | 50 | 223 | 96 |
| ASTM A193 grade B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 | 321 | 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 | |||
| ASTM A193 grade B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 | 321 | 35 |
| 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 |
The material chosen for the threaded stud and the hex nuts should be compatible. Materials for bolting sets shall be selected based on the process's working temperatures, as shown in the table below:
| TEMPERATURE °C ( °F ) | ||
| STUD BOLTS MATERIALS | MIN. | MAX. |
| CARBON STEEL | -29 (-20) | 300 (572) |
| A193 B7, L7 | -73 (-100) | 400 (752) |
| A193 B6 | 0 (32) | 500 (932) |
| A193 B8 | -200 (-325) | 575 (1067) |
| A193 B16 | 0 (32) | 520 (968) |
| A193 B17B | -29 (-20) | 650 (1202) |
| A913 Inconel 718 | 0 (32) | 750 (1382) |
| A453 Gr. 660 | -29 (20) | 538 (1000) |
ASTM A453 Stud Bolts for High-Temp. Service
ASTM A320 Stud Bolts for Low-Temp. Service
Stud Bolts' Coating
Stud bolts can be coated to increase the resistance to corrosion. The most common types of coatings for stud bolts are listed below:
- Electro zinc plating
- Electro cadmium plating
- Hot dip galvanizing
- PTFE Coating
- Phosphate coating
- Electroless nickel plating
- Zinc-nickel coating
- Aluminum coating
- Silver coating
- Zinc/Nickel by electrodeposition
- Xylan coating
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASR247255". Items marked "
" are certified.
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Company Profile
We Xiamen Qishine Industry Co., Ltd. is dedicated to supplying extensive range of Pipe, Valve, Flange, Pipe Fitting, Fastener, Gasket and related spare parts for oil, gas, petroleum industry service. And we offer Solar Power Supply System, such as Photovoltaic Panel in New Energy Field. Qishine. En. Made-in-China. com is our homepage, you are welcome to login for more details.
All Qishine's products are manufactured by ISO, API, CE/PED and EU approved factories. Professional production, scientific management and good workforce, making our products are popular in Europe, American, Middle East, Asia and Africa. Our products are 100% inspected before packing with qualification EN10204- 3.1 certificates. And any third party inspection before delivery are welcome.
Our advantages:
One-stop shop service, save time and cost for clients. Best choice for EPC companies and projects' construction.
Good quality goods.
Rich experience in exporting and projects service.
Competitive price.
Professional service.
Choose Qishine means you stand with reliability, high quality & Competitiveness!
The future of Qishine begins today, and it is focused on being the preferred supplier of steel pipeline materials. For this, it must be differentiated by offering maximum quality goods, giving the best service, with the best possible competitiveness, and this is what we work on continually.
Good quality + competitive price + professional service = Long-term win-win cooperation. Please give both of us the nice opportunity to work together. I believe it will be a great start. Expecting your nice enquiry and to be your long-term strategy partner soon.
Thank you for your support!
About Our Factory & Business Background
- Address
- 318 Houhang Qianshe, Huli District, Xiamen, Fujian, China
-
Registered Capital
- 10,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Xiamen Port
-
Minimum Order Quantity
- 1
-
Supply Chain Partners
- 6
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2013-11-18
-
Export Year
- 11 Years
-
Main Markets
- North America, South America, Europe
-
Repeat Buyers Choice
- 30%~50%
-
Number of Foreign Trading Staff
- 4
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015
FAQ
- What is the size range for the stud bolts?
- The stud bolts are available in a size range from M6 to M100 and 1/4' to 4'.
- Can the length of the stud bolt be customized?
- Yes, the length is available according to the client's specific requirements.
- What materials are used for the stud bolts?
- The primary material is Carbon Steel, specifically ASTM A193 grade B7m, with options for other grades like B8 and B8M.
- What coating options are available?
- We offer various coatings including Xylan Coating, PTFE, Zinc, Electro zinc plating, and Hot dip galvanizing.
- What is the delivery time for these fasteners?
- The standard delivery time is 2-4 weeks.
- Is OEM service available for this product?
- Yes, OEM service is available, and customization from samples is supported.
- What certifications does the product hold?
- The products are certified by API, CE, TUV, and ISO standards.
- What is the minimum order quantity?
- The minimum order quantity is 1.
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