Factory directly provided ASTM A320 L7 Heavy Hex Bolts for US Manufacturers

Factory directly provided ASTM A320 L7 Heavy Hex Bolts for US Manufacturers

Short Description:

ASTM A320 L7 A193 B7 Dual Certified Heavy Hex Bolts Standard: ASME/ANSI B18.2.1, ASME/ANSI B18.2.3.7M Various types of head are also available Inch Size: 1/2”-2.3/4” with various lengths Metric Size: 1/2-M72 with various lengths Grade: ASTM A320 L7, ASTM A193 B7 Finish: Black Oxide, Zinc Plated, Zinc Nickel 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, S...


Product Detail

Product Tags

We have advanced equipment. Our products are exported to the USA, the UK and so on, enjoying a good reputation among customers for Stud Bolts And Nuts Table, Lock Nuts Removal Without Key, Stud Bolts price, We welcome buyers all around the word to call us for long term company associations. Our items are the most effective. Once Selected, Ideal Forever!
Factory directly provided ASTM A320 L7 Heavy Hex Bolts for US Manufacturers Detail:

ASTM A320 L7 A193 B7 Dual Certified Heavy Hex Bolts

Standard: ASME/ANSI B18.2.1, ASME/ANSI B18.2.3.7M Various types of head are also available

Inch Size: 1/2”-2.3/4” with various lengths

Metric Size: 1/2-M72 with various lengths

Grade: ASTM A320 L7, ASTM A193 B7

Finish: Black Oxide, Zinc Plated, Zinc Nickel 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.


Product detail pictures:

Factory directly provided ASTM A320 L7 Heavy Hex Bolts for US Manufacturers detail pictures


All we do is always associated with our tenet Customer first, Trust first, devoting on the food packaging and environmental protection for Factory directly provided ASTM A320 L7 Heavy Hex Bolts for US Manufacturers, The product will supply to all over the world, such as: Jeddah, azerbaijan, Colombia, We take measure at any price to attain essentially the most up-to-date gear and procedures. The packing of nominated brand is our a further distinguishing feature. The solutions to assure years of trouble-free service has attracted a great deal customers. The goods are obtainable in improved designs and richer variety, they're produced scientifically of purely raw supplies. It accessible in a variety of designs and specifications for the selection. The newest forms are much far better than the previous one and they're extremely popular with several clients.



  • Departmental Procedures & Guidelines for Inspections, Certifications, Load Testing, Repairs & Painting of Fire Escapes
    Inspections by Structural Engineers, Fire Escape Engineers or others acceptable to the Official:
    In layman’s terms, the city official is looking for a registered structural engineer or others qualified and acceptable by the Fire/Code Official to do a Critical Examination in lieu of a Live Load Test (criteria submitted or discussed prior to inspection) and issues written verification and certification that all connections are free of internal rust or rot as well as all original hardware (square head bolts or rivet) are reinforced and or replaced in lieu of Live Load Test. All supports (thru-bolts or cemented) into the wall must be verified and certified in lieu of Live Load Test. A fire escape confidence test and tag must be submitted if fire escape passed. The report with photos identifying violations for repairs must include repair criteria submitted to the official for repair vendor to use as a guide during and with engineer oversight of permitted repairs. A Fire Escape Confidence Test and tags identifying certified condition are then submitted. Recommended cycle for live load testing is 20 yrs after total refurbishment or as required by official.

    Repairs by Ornamental Ironworkers, Welding Companies or others acceptable to the Official:

    In layman’s terms, the city official is looking for a qualified licensed repair vendor to do all work under repair permit (if required) with engineer oversight of repair criteria submitted for approval to the official in lieu of Live Load Test. All connections must be free of internal rust or rot, spot primed and sealed. All worn material repaired and or replaced. All supports into wall reinforced, repaired and certified in a Fire Escape Confidence Test. In lieu of Live Load Test, all square head bolts, rivets and or welded connections must be certified, reinforced and or replaced based on age or condition. All ladders and cantilevers must be balanced and drop 2-3 ft per second, hit the ground and stay down and must lead to a public way. All roof ladders must be secure. No full painting of any fire escape until all spot painted repairs are inspected and certified under engineer oversight and or city official permit sign-off. Full replacement is subject to permits and or possible code upgrade requirements.
    Painting by EPA Licensed Renovators (if lead paint is present) or others acceptable to Official:
    In layman’s terms, the city official is looking for a paint vendor (EPA Certified Renovator if required) to do all work as per EPA Guidelines due to the fact that all fire escapes older than 1978 are presumed to have lead (EPA) unless identified as no lead or low lead by a licensed lead inspector. Entire building will be notified with signage and all precautions shall be taken to collect paint chips at grade. No sandblasting or power assisted scraping without full fire escape encapsulation under EPA Guidelines. All major connection shall be sealed from water intrusion before during or after painting. All escapes should be spot painted every 3-5 yrs and fully painted every 5-10 yrs or as needed or ordered by a Fire/Code Official.
    Fire Escape Codes:
    NFPA Lifesafety Code 101 7.2.8.6.2 The authority having jurisdiction shall be permitted to approve any existing fire escape Stair that has been shown by load test or other satisfactory evidence to have adequate strength.

    For more information please visit our website at https://fireescapeengineers.com or call 866-649-0333
    Fire Escape Engineers is an approved member of the Fire Escape Services Network https://www.fireescpeservices.com and a founding member of the National Fire Escape Association (NFEA) https://www.nationalfireescapeassociation.org

    Related Products