Top Suppliers ASTM A325 Heavy Hex Structural Bolts to Mexico Factories
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ASTM A325 Heavy Hex Structural Bolts
The bolts are intended for use in structural connections. These connections are covered under the requirements of the Specification for Structural Joints Using ASTM A325 Bolts, approved by the Research Council on Structural Connections, endorsed by the American Institute of Steel Construction and by the Industrial Fastener Institute.
Dimension: ASME B18.2.6
Thread Size: 1/2"-1.1/2" with various lengths
Grade: ASTM A325 Type-1
Finish: Black Oxide, Zinc Plating, Hot Dip Galvanized, Dacromet, and so on
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.
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Top Suppliers ASTM A325 Heavy Hex Structural Bolts to Mexico Factories Related Video:
It has come to my attention that an identical machine has already been conceptualized and patented US patent # 20030012675 A1
It seems everything has already been invented 
Models:
https://docs.google.com/open?id=0Bz85oSr4b0ZAMmIxYzlkZTEtMzExNS00ZTgzLWJmZmItNDVjMWI2NmFkYzNi
The current screw profile is not sealed ie: some leakage can occur from one discrete air pocket to the next, and the current profile would leak. I believe there may be an air tight profile tho, as some more complicated profiles have been used in screw compressors.