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YIWU XINGFENG SCREWS AND FASTENERS 7yr.
Main Products:Screws,fasteners,drywall screws,drilling screws,self-tapping screws,nuts,high-strength bolts,expansion bolts
Contacts:Cao Yanhong Chat
Mobile:86-18072687675
E-mail: WeChat:18072687675
Address:20049 , 5 Street, 1 F, 东4号 Gate, International Trade Mart (District 2) - East.
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膨胀螺栓的等级分为:45、50、60、70、80，
膨胀螺丝的材料:主要分奥氏体A1、A2、A4，
马氏体和铁素体C1、C2、C4，
45号钢，对于重要的或特殊用途的螺纹联接件，可选用15Cr ，20Cr，40Cr，15MnVB，30CrMrSi等机械性能较高的合金钢。
根据墙体实际情况选用不同膨胀螺丝。 一般有以下几种6×60、6×80、6×120、6×150。
6×60:总长60 mm，套管长45 mm、直径8 mm、壁厚0.7 mm、表面是镀彩锌;螺杆长60 mm、直径6 mm、螺纹的部分35 mm、底部杆锤8mm的圆锥形，表面是镀彩锌;螺母外径10 mm的八角形、厚度5 mm、表面是镀白锌;垫片外径13 mm、厚度 1mm、内径6 mm、表面镀白锌;弹片是外径9 mm、内径6 mm、厚度1.6 mm圆环。
6×80:总长80 mm，套管长65 mm、直径8mm、壁厚0.7 mm、表面是镀彩锌;螺杆长、螺母、垫片、弹片同上。
6×120:总长120mm，套管长105mm、直径8mm、壁厚0.7 mm、表面是镀彩锌;螺杆长、螺母、垫片、弹片同上。
6×150:总长150mm，套管长135mm、直径8mm、壁厚0.7 mm、表面是镀彩锌;螺杆长、螺母、垫片、弹片同上。
Expansion bolt grades :45, 50, 60, 70, 80,
Expansion screw material: main austenite A1, A2, A4,
Martensite and ferrite C1, C2, C4,
45 steel, for important or special purpose threaded connection, can choose 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi and other alloy steel with higher mechanical properties.
Select different expansion screws according to the actual situation of the wall. Generally there are the following kinds of 6×60, 6×80, 6×120, 6×150.
6×60: the total length is 60 mm, the casing length is 45 mm, the diameter is 8 mm, the wall thickness is 0.7 mm, the surface is coated with colored zinc; Screw length 60 mm, diameter 6 mm, thread part 35 mm, the bottom rod hammer 8mm conical, the surface is painted zinc plating; The nut is octagonal with an outer diameter of 10 mm and a thickness of 5 mm. The surface is white zinc plated. Gasket outer diameter 13 mm, thickness 1mm, inner diameter 6 mm, surface coated with white zinc; The shrapnel is a ring with an outer diameter of 9 mm, an inner diameter of 6 mm and a thickness of 1.6 mm.
6×80: the total length is 80 mm, the casing length is 65 mm, the diameter is 8mm, the wall thickness is 0.7 mm, the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as above.
6×120: the total length is 120mm, the casing length is 105mm, the diameter is 8mm, the wall thickness is 0.7mm, and the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as above.
6×150: the total length is 150mm, the casing length is 135mm, the diameter is 8mm, the wall thickness is 0.7mm, the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as above.
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