Боннелл весной или пружина

(1) The following are the common specifications of the single spring used for the spring unit. Wire Diam.: 1.6-2.4mm Top Diam.: 4.5-5.5cm Waist Diam.: 6.5-7.5cm Border Wire: 4.8-5.0cm Height: 8-23 Turns: 4-7 We have two kinds of packing ways. Roll packing---without the border wire Flat compress packing---with the border (2) For the bonnell spring, 4 turns, height range 85mm - 105mm 5turns, height range 135mm - 150mm 6turns, height range 145mm - 170mm Steel wire range, 2.1mm -2.4mm Helical wire range, 1.3mm or 1.4mm Border wire range, 4.0mm -5.0mm What's more, we can make other special size according to your detailed requirements.