Crane Bottom Hooks

Place of Origin: Henan, China
Material: Steel, Carbon/Alloy steel
Product name: hook

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Product Introduction

Crane Bottom Hooks

Product Details

Model Number: Forged

Finish: Painted

Application: Heavy lndustry, Mining, Water Treatment, Retail lndustry, General Industry, Oil & Gas, Automotive lndustry.

Lifting Fittings

Place of Origin: Henan, China

Material: Steel, Carbon/Alloy steel

Product name: hook

Packing: Plywood box

MOQ: 1 Pcs

Color: Customized Color

Grade: M P S T V

Technical Parameter of crane Bottom hooks:

◆The hook grade and material
Hook grade		M		P		(S)	T	(V)
Hook No
1.6#-40#		Q345qD or 20Mn		Q345gD or DG20Mn		Q420qD or 35CrMo	35CrMo	34Cr2Ni 2Mo
50#-250#				Q420qD		35CrMo	34Cr2Ni2Mo	30Cr2Ni 2Mo
Standard:GB10051-2010 same as DIN15400
◆ Mechanical standard
Hook Grade	Carbon Steel					Alloy Steel
	Upper yield strength Mpa	lmpart energy Akv(ISO-V)/J				Upper yield strength Mpa	mpart energy Akv(ISO-V)/J
		20℃		-20℃			20℃	-20℃
		Vertical	Cross	Vertical	Cross		Vertical	Cross
M	235	55	31	39	21	-		-
P	315						-	-
(S)	390					390	35	27
T	-	-				490	35	27
(V)						620	35	27

Production Description:

Hooks are usually equipped with safety latches to prevent the disengagement of lifting wire rope sling or chain :Hooks can be classified into single hook and double hooks according to the appearance;

Hook Grades:

> M grade with DG20, or DG20Mn

> P grade with DG20Mn

> S grade with DG34CrMo

> T grade below 40t with DG34CrMo, more than 40t with DG34CrNiMo or DG30Cr2Ni2Mo> V grade below 40t with DG34CrNiMo or DG30Cr2Ni2Mo, more than 40t with DG30Cr2Ni2Mo

One of following cases happens, and discard as useless1 Flaws

2 Abrasion of dangerous fracture surface reaches 10% of full size

3 Degree of opening adds to 15% than full size.

4 Torsional deformation exceeds 10°.

5 Dangerous fracture surface and hook neck have plastic deformation6 Lining of board hook abrades reaches 50% of full size, and should be discarded as useless7 Mandrel of board hook abrades reaches 50% of full size, and should be discarded as useless