Yantai HengYuan Industry and Trade Co., Ltd. is the 1st class agent for 3 specialized seamless carbon steel pipes factories which are government factories and with API certificate. we have advantage because of the 1st class agent. Our export normal size rang from 1/2” to 12”(part for 14” and 16” random length). Normal specification: line pipe: ASTM A53/A106/API 5L B, DIN1629/2448 ST44/ST52, EN10297 E355and all GB standards. bare tubing: API 5CT J55,K55,N80 we export about 20000-25000mts pipes every year, including America, south America, Europe, Asia, Africa market. E-mail: hengyuan2@yahoo.cn ，hengyuanyt@yahoo.com.cn Tel: 0535-6656117 Fax:0535-6655117
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