| The SteelLock® series of Bolted Mechanical Fittings are manufactured in our own factories under quality management system in accordance with ISO 9001:2008. Body,End Rings and Lock rings Ductile Cast Iron to BS EN 1563 Grade GJS450-10 T-Bolts and Nuts to BS EN 20898-1 Grade 4.8 Gaskets EPDM: to BS2494 type W&D Suitable for Potabale Water, Sewage and Chemicals (not suitable for Petroleum Products). Suitable Temperature Range: -40℃ to +90℃. NBR: to DIN 3535-3 Suitable for Natural Gas and Petroleum Products (not suitable for Potable Water). Suitable Temperature Range: -20℃ to +100℃. Washers Acetal Copolymer (POM-K) Grade Celcon® M90 or equivalent. Coating Body and short T-bolts are Epoxy Powder Coated in WRAS Approved Material.Lock Ring, T-Bolts and nuts are protected by Cathode Electrophoresis Coating against corrosion. Coating Thickness for Cathode Electrophoresis: ≥20μ(Lock rings) ≥20±5μ(T-Bolts and nuts) Coating Thickness for Epoxy Powder Coating: ≥150μ |