Two side bolt

The double-end stud bolt is used when assembling the grate surface of a flake-type chain grate. The partner factory supplies it to OEM dimensions, and it can be shipped together with other spare parts of the same series.

Its place on the flake-type grate

The flake-type (thin-flake) chain grate is one of the most common grate designs in industrial boilers, and its grate surface is a continuous surface built from interlocking flake-shaped grate bars. Chain links, pins with splints, and retainer clips each take care of connection and fixing; the double-end stud is a fastener in this assembly, with a thread at each end joining the mating parts. When grate bars are replaced or chain links are serviced, fasteners of this kind usually need to be checked and replaced at the same time.

Materials of the parts in the same series

Parts in the same spare parts series use materials chosen for each part’s role, and the fasteners work together with the adjacent parts:

Material system and technical standard

The material range for grate parts at our partner factory covers HT200, HT250, RTSi5, RQTSi5, RTCr16, RTCr, RTCr2, RTCr5 and RTCr2Si4Mo, with customisation to customer requirements, and the products meet the NB/T 47050-2016 technical standard. The material and thread specification of the stud itself are matched after confirmation against the customer’s grate model and drawing number.

Supply and selection

All parts are machined to OEM dimensions and tolerances and are dimensionally inspected before dispatch, including dimensional verification and material composition analysis. We supply grate bars, chain links, pins, side seals, splints and retainer clips for flake-type chain grates; please provide the grate model or drawing and the quantity you need so that we can check the specifications.