Paʻa is a kind of sling, which is widely used in various industries such as electric power, metallurgy, petroleum, machinery, railway, chemical industry, port, mining, construction and so on. Paʻas are the same as other slings. They have their own set of application and invalidation specifications. Note for the use of kauluas: The kauluas must correctly support the load.
ʻO ia, pono ka hopena hopena ma ke axis o ka waena waena o ka hoʻopaʻa e pale ai i nā piʻo a me nā ukana paʻa ʻole, me ka ʻole o ka nui o ka ukana. Ka hoʻohana a me ka invalidation o kakaulua should be rolled flexibly in the lifting hole, and no jamming is allowed. Phenomenon: The kaulua body must not bear the effect of lateral bending moment, that is, the effect bearing capacity should be in the plane of the body.

ʻO ke kihi i hoʻohui ʻia ma waena o nā wāwae ʻelua i lawe ʻia e kakaulua cannot be greater than 120 degrees. The use and invalidation of kauluas The kaulua is that when the wire rope sling is used as a binding sling, the horizontal pin part of the kaulua should be connected with the keyhole of the wire rope sling. The appearance is when the rigging is lifted.

ʻO ka hakakā ma waena o ke kaula uea a me kakaulua causes the kaulua to roll, and there is a risk of detachment. The use and invalidation specifications of the kaulua. The pin is deformed up to 5% of the original size; the bolt is necrotic or slippery.