SINGLE Can be used for fastening into rock, concrte, brick, etc. If bolt is remove and replaced, holding power is unaffected. One-piece design, made of zinc alloy, is cntirely rust-proof.
DOUBLE Can be used for fastening into rock, concrete, brick, etc. Eliminates high stress points detrimental in fastening into materials of medium hardness, expands fully and has high pripping power. Ideal for sheer loads or where bolt is subject to side pressure or vibration. Does not fracture, and permits fastenings a any length. The test values listed were obtained using 200-250 kgs/cm2 concrete(no aggregate). A safe working load should not exceed 25% of stated value. We can supply all kinds of Double/Single Expansion Anchors, Zinc Alloy, Fitting, Anchor