翔迷社区 - 一个拥有飞翔梦想的无人机社区[FlyFan forum - with a flying dream]
标题: Oakley EK Signature Eyewear Grey Lens 14 90% OFF [打印本页] 作者: RaymondNef 时间: 2016-7-12 13:37 标题: Oakley EK Signature Eyewear Grey Lens 14 90% OFF ASTM Bolt Features
Proof load is defined from the "Fastener Glossary regarding Terms" as the weight a fastener must endure without visually deforming. Proof weight is usually 90 % of deliver strength. Evidence load for the ASTM A307 grade associated with bolt is undefined by the specification. Proof load for oakley sunglasses cheap 90% off the ASTM A449 rank of bolt must be at least 85,000 psi regarding bolts 1/4 in . to 1 inches in diameter, 74,000 pounds per square inch for bolts over 1 inch to 1 1/2 inches in diameter along with 55,1000 psi pertaining to bolts oakley sunglasses cheap more than 1 1/2 ins to 3 ins in diameter. Proof load to the ASTM A490 grade associated with bolt have to be at least One hundred twenty,000 psi for all bolts in the quality.
The National Society regarding Testing as well oakley store as Materials, or even ASTM, is an business that standardizes specifications for supplies, systems along with equipment globally. One.