Shandong Siffo Plastic Technology | Global Leader in Plastic Pipe Systems

SIFFO operates two modern production bases in Linyi, Shandong, and Nanjing, Jiangsu, covering a combined area of more than 150,000 square meters. The facilities operate more than 60 specialized production lines, including 20 HDPE pipe extrusion lines, 8 HDPE double-wall corrugated pipe lines, 15 SRTP/SRPE composite reinforced pipe lines, 15 PVC pipe lines, and more than 10 lines for various pipe fittings. SIFFO has a total annual production capacity exceeding 450,000 tons, comprising more than 200,000 tons of HDPE pipes, 150,000 tons of PVC pipes, and 100,000 tons of SRTP/SRPE composite pipes. This large-scale manufacturing system enables multiple pipe categories, diameters, pressure ratings, SDR classes, and customized specifications to be produced simultaneously. It also provides the flexibility required for bulk orders, phased deliveries, urgent schedules, and complex international projects. Quality control covers raw-material inspection, production monitoring, dimensional measurement, mechanical testing, pressure testing, and finished-product verification. SIFFO’s management systems and applicable products are supported by internationally recognized certifications and third-party assessments, including ISO, ECM, WRAS, NSF, and SGS. Certification availability is confirmed according to the specific product and destination market. By combining scalable production, consistent quality control, certified products, and coordinated delivery, SIFFO provides reliable piping solutions for municipal water supply, drainage, gas distribution, mining, industrial processing, irrigation, and other demanding applications worldwide.