W1	W2	W2	W3\W4

material	size mm	free torque Nm	breaktorque Nm
W1	φx≤φ25	1	4.5
	φx≥φ27	1	5
W2	φx	1	6
W4 W5	φx≤φ25	1	6
	φx≥φ27	1	6.5

W1 :Band,housing＆screw,all zinc-piated (head crossed)
W2 :Band,housing＆with all stainless steel 300 or 430,zinc-piated screw (head crossed)
W4 :Band,housing＆screw with all stainless steel 201or304 (head slotted)
W5 :Band,housing＆screw with all stainless steel 316 (head slotted)