JJ-TEST TESTING EQUIPMENTS FOR THERMOPLASTIC MANHOLE
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Testing Equipments For Thermoplastic Manhole ChengdeJinjian Testing Instrument Co., Ltd. Add:No. 14,High-technology Development Zone, E-mail: jinjian@jj-test.com http://www.jj-test.com

■Buckling Resistance Tester lor Thermoplastic Manhole JJRBT-1 series buckling resistance tester is used to simulate the conditions when manhole is buried underground and check its resistance to the force from underground water. Seal and vaccumize the sample between 20°C-25"C, keep the internal negative pressure stable for more than 1000h, measure the deformation of the sowchannel side and bottom, then extrapolate the deformation occurred after 50 years by least square method. 1 .High efficiency vacuum system provides a wide negative pressure range of-70kPa to OkPa . 2.Specialized end caps...

JJICI Manhole Impact Tester JJICI manhole impact tester is used to test the impact performance of manhole base Test procedure: release the weight at a height of 2.5m, make it fall free to impact the center of the sowchannel in the manhole base. The radius of curvature of impact weight is 50mm and mass is 1kg. After impact, check whether manhole base is 1 .Vacuum system is introduced to lift the weight, with big suction and high efficiency. 2.With the functions of measuring instantaneous impact velocity, automatic catching impact weight and anti-rebounded. 3.System frame with the adjustable...

Manhole Mechanical Properties Tester JJICM manhole mechanical property tester is designed to determine the performance of inspection chamber, manhole frame as well as manhole wall. It can be used to test shear strength and the axial loading performance of manhole base; It can also be used to test Ring stiffness, flatness and ring flexibility test. 1 .Gate-type structure with super high rigidity, test speed can be controlled in a big range, seamless ball bearing ensures high accuracy and stable 2.Imported digital AC servo system has been introduced, piecewise linear correction method ensures...