- MaterialFiberglass plastic
Composite d=10 fittings
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Reinforcing steel of the class A-III, or A400 (the fittings of a class III are understood also as the A400s brands and A500s) is made from low-alloyed and carbonaceous staly brands 35GS, 25G2S, 32g2rps according to GOST 5781-82 1. The A-III fittings are carried out or with drawing the periodic profile having on the one hand a rod left, and sdrugy right calling, or, at the customer's request, smooth. The fittings of a periodic profile represent a profile with two edges and cross ledges going on the three-way screw line. For fittings with a diameter of 6 mm the one-way screw line, and with a diameter of 8 mm - two-way is allowed.
The difference of the maximum and minimum diameters in one section, or "ovality" of a smooth profile, should not exceed the sums positive and otritsatelngo maximum deviations on diameter. The sizes which do not have maximum deviations on ready fittings do not check.
The class A-III with a diameter up to 10 mm fittings inclusive in hanks or cores, and big diameters - in cores are delivered. Cores are issued from 6 to 12 m long:
measured length, allowing existence of unmeasured pieces no more than 15% of mass of party with their length not less than 2 meters
unmeasured length, allowing existence of cores from 3 to 6 meters no more than 7% of all mass of party.