タイトルまたは説明

Automatic trip hammer is produced according to the BS***7：Part 9：***0. The hammer weight is *3.5kgs and the free falling stroke is **0mm, the total length of SPT automatic trip hammer is 1.8m which could be extended to 2.6m as well as the overall weight is **7kgs.

SPT drive rods, connected with SPT sampler, is produced according to BS***7：part9：***0 standard, the external diameter of which is *4mm with **1/2" male thread on the one end and **1/2" female thread on the other end. SPT drill pipes with four different lengths are available including 0.*5m, 1.0m, 1.5m and 3.0m.

SPT sampler is composed of top ball valve adaptor, pair of split spoons and open SPT shoe which is produced according to BS***7: Part9: ***0 and ASTM standards. The external diameter of SPT sampler is *0.8mm and the internal diameter is *4.9mm, the length is usually **7mm or **0mm.