The lengthoftube should be short and tube O. D. should be suitable.
管子长度要短，管径要合适，流速过高会损失能量。
2
Because of country differential, the lengthoftube wills non-accord so please assign customer in to order.
因各地区区灯座差异性灯管长度略有不同，请于订单上特别注明。
3
Using a lengthoftube as the blank, hydroforming technology of tubular parts promise an extensive prospect to produce a variety of complex hollow components.