PN100, 300 degrees, DN100, carbon steel ball valve – is it necessary to use forged A105?
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PN100, 300 degrees, maximum diameter DN100, minimum diameter DN15; carbon steel ball valve. The valve supplier chose A105 as the material for the valve body instead of WCB. Are there any regulatory requirements in this regard? Suppliers should choose the cheaper option whenever it’s feasible
The first type has a smaller diameter and operates at high pressure； Forged steel has superior properties in all aspects compared to cast steel ； Processing small forgings is also relatively easy, with few defects ； Casting requires molds, and factors such as environmental protection must be taken into account. As for the specifications, both materials meet them.
For small-diameter high-pressure valves, casting results in less material usage and lower processing costs, but it also incurs costs related to molds. The defect rate is much higher compared to forging, and molds are not capable of meeting the requirements of orders with significant variations; therefore, forging is often used instead, as it yields better appearance.