ZD PIPE.ZD PIPE was established in April 2005 and is located in Huai'an City, Jiangsu Province. It is a specialized manufacturer of large-diameter cold-drawn seamless steel pipes. ZD PIPE occupies a site area of 450,000 square meters (675 mu), with a building area of 200,000 square meters and fixed assets valued at 800 million yuan. The company currently employs over 580 staff members. ZD PIPE currently produces large-diameter seamless steel pipes in multiple steel grades and specifications, ranging from D: φ168 to φ720, S: 4.5 to 50 × Lmm. ZD PIPE products serve the domestic market and are exported to Europe, America, Southeast Asia, Central Asia, and the Middle East, establishing long-term strategic partnerships with internationally renowned enterprises. The company currently possesses an annual production capacity of 300,000 tons, positioning it as a leading domestic manufacturer of large-diameter thin-walled cold-drawn seamless steel pipes. Its primary product portfolio includes: - Low- and medium-pressure boiler tubes - Petroleum cracking tubes - High-pressure fertilizer equipment tubes - High-pressure boiler tubes - ASME standard products - Structural tubes - Fluid conveyance tubes - Gas cylinder tubes - Large-volume gas cylinder tubes - Casing and tubing - Pipeline tubes