阀门扳手/ NO.174A品牌:X-Spark材料:铝青铜/铍铜铝青铜/铍铜成分:Al:10~12% / Be:1.5~1.7% 1.8~2.3% Ni:4~6% / Co+Ni: 0.2%以上Fe+Mn: 5.8%以下/ Co+Ni+Fe: 1.2%以下Cu+Al+Ni+Fe+Mn: 99.0%以上/Cu+Be+Co+Ni+Fe: 99.0%以上硬度(布氏硬度):221~291 / 283~365延伸性:δ≥5% / δ≤1.0%断裂:782 N/mm 2~989 N/mm 2、1117 N/mm 2~1326 N/mm 26。弹性极限:450 N/mm 2 ~550 N/mm 2、840 N/mm 2 ~880 N/mm 2 7。电阻值(Ω):8~12 / 8~6膨胀系数:0.000015% / 0.000012%重量:8.10 g/cm 3, 8.60 g/cm 3无火花/无磁性QB / T 2613.9 - 3。精密铸造:外形美观、密度高、超强坚固、经久耐用。圆形封头和厚爪增加了与阀门的接触面积。易于使用。规格:30* 200mm、50* 400mm、75* 650mm、100* 1000mm铝青铜工具适合作业浓度7.8%乙烯。 2.Beryllium bronze explosion-proof tools suitable for concentration of homework 21% hydrogen. 3.Safety pipe wrench is used to tighten or loosen bolts valves,F type,widely used. 4.Safety tools is widely used in oil and gas works,mines,airports,armed forces and in a explosive and flammable place. We have got GS, FM ,UKAS ,ISO 9001 and ISO 14001 Certificates and registered the safety tool brand X-Spark in the European Union, Singapore, Japan ,Russia and other countries. We guarantee all the safety tools we manufactured are 100% qualified and backed by Lifetime.