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Style 40
MATL SPECS FOR MIDCO COMPONENTS: Glands - ASTM A 536 Grade 65-45-12 Ductile Iron and Epoxy Coated to 4 mil thickness. Style 30 Grip Ring - C923 Bronze. Style 40 Grip Ring - ASTM A 536 Grade 80-55-06 Ductile Iron Heat Treated to 350-400 BHN. T-Bolts and Nuts - ASTM A 242
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