Dalian Dinglian Hardware Products Co., Ltd. is a specialized manufacturer of ASTM/ASME standard threaded pipe nipples and related pipe products. With extensive experience in machining carbon steel and stainless steel materials, we supply reliable piping solutions to customers in the industrial, plumbing, fire protection, oil & gas, and mechanical sectors. Located in Dalian, China, our factory is equipped with advanced CNC machining equipment, including over 10 CNC lathes, CNC band saws, and automated cutting machines. We manufacture threaded pipe nipples from 1/8" to 8" NPS, in lengths ranging from close nipples to 12-meter random lengths, with wall thicknesses from SCH40 through XXH. Available materials include carbon steel, stainless steel, seamless pipe, and welded pipe.