发展现状: 目前国内管材生产线约有2000多条;塑料(UPVC)门窗型材生产线达到3000条以上,生产能力突破100万吨;门窗组装线达到6000条以上,组装能力超过1.2亿平方米,可为6亿平方米以上的建筑配套。目前全国UPVC管材、管件生产厂家共有700多家,其中生产规模在3万吨/年以上的有5家,1-3万吨/年以上的有20多家,规模在0.5-1万吨/年的有近60家。 Development Status: At present, there are about 2,000 domestic pipe production lines; the production line of UPVC door and window profiles reaches more than 3,000 and the production capacity breaks through 1 million tons; the assembly line of doors and windows reaches more than 6,000 and the assembly capacity exceeds 120 million square meters; More than 600 million square meters of construction facilities. At present, there are more than 700 UPVC pipe and pipe fittings manufacturers nationwide, including 5 with a production scale of over 30,000 tons / year, more than 20 with a scale of 0 to 10,000 tons / year, Nearly 60 years.