... .2-M6.0 BWG6-16 4)Material : Q215 Carbon Umbrella roofing nail1) Specifications: 8G, 9G, 10G, 11G, 12G, 13G2) Length ... specialized in manufacturing each kind of architectural hardwares including barbed roofing nail,wire nail,steel nail,iron hinges,bolts, knob ... the biggest factories which produce common wire nail, umbrella roofing nails, coil nail, building nails, screw nail, concrete nail, also we can ...