Water Pump Pliers/NO.252A
Brand:X-Spark
Material: Aluminum Bronze/Beryllium Copper 
Parameters:
1.Item:Aluminium Bronze/Beryllium Copper
2.Composition:Al:10~12% / Be:1.5~1.7% 1.8~2.3%
                        Ni:4~6%    /  Co+Ni:over 0.2% 
                        Fe+Mn:below 5.8% / Co+Ni+Fe:below 1.2% 
                       Cu+Al+Ni+Fe+Mn:over 99.0% /Cu+Be+Co+Ni+Fe:over 99.0% 
3.Hardness(Brinell):221~291 / 283~365 
4.Extensibility:δ≥5% / δ≤1.0% 
5.Breaking:782 N/mm 2~989 N/mm 2 , 1117 N/mm 2~1326 N/ mm 2 
6.Elasticity Limit:450 N/mm 2 ~550 N/mm 2 , 840 N/mm 2 ~880 N/mm 2 
7.Elec Resistance(Ω):8~12 / 8~6  
8.Dilatation Coefficient:0.000015% / 0.000012% 
9.Density Weight:8.10 g/cm 3  , 8.60 g/cm 3
10.Magnetic:1.2 / 0
Design Features:
1.Non Spark/Non Magnetic
2.An advantage of this design is that the pliers can adjust to a number or sizes without the distance in the handle growing wider.
3.Die Forged: Beautiful appearance, high density, super strong, durable
Specification:
Number L  L K max Be-Cu Al-Cu
      inch mm mm    g          g
252-1002 10 250 32  365 335
Application:
1.Aluminum bronze tools suitable for concentration of homework 7.8% ethylene.
2.Beryllium bronze explosion-proof tools suitable for concentration of homework 21% hydrogen.
3.The upper jaw can be moved to a number of positions by sliding along a tracking section under the lower jaw. Commonly used for turning and holding bolts and nuts,gripping irregularly shaped objects and clamping materials in a explosive and flammable place.
We have got GS, FM ,UKAS ,ISO 9001 and ISO 14001 Certificates and  registered safety tool brand X-Spark in the European Union, Singapore, Japan ,Russia and other countries.