塑(su)料(liao)(liao)(liao)制品業(ye)(ye)屬(shu)于制造業(ye)(ye)。塑(su)料(liao)(liao)(liao)制品業(ye)(ye)分別(bie)是：塑(su)料(liao)(liao)(liao)薄膜制造 指(zhi)用于農業(ye)(ye)覆蓋，工業(ye)(ye)、商業(ye)(ye)及(ji)日用包裝薄膜的制造 ；塑(su)料(liao)(liao)(liao)板、管(guan)、型(xing)材(cai)制造 指(zhi)各種塑(su)料(liao)(liao)(liao)板、管(guan)及(ji)管(guan)件、棒材(cai)、薄片(pian)等的生產活(huo)動，以及(ji)以PVC為主(zhu)要原料(liao)(liao)(liao)，PPH加料(liao)(liao)(liao)桶來圖(tu)加工，經連(lian)續擠出成型(xing)的塑(su)料(liao)(liao)(liao)異型(xing)材(cai)的生產活(huo)動 ；塑(su)料(liao)(liao)(liao)絲、繩及(ji)編織品制造 指(zhi)塑(su)料(liao)(liao)(liao)制絲、繩、扁條，塑(su)料(liao)(liao)(liao)袋及(ji)編織袋、編織布(bu)等的生產活(huo)動 ；

PPH鋼塑法蘭，PPH加料桶，PPH鋼塑活套法蘭，PPH法蘭偏心大小頭。增強塑料:增強塑料原料在外形上可分為粒狀(如鈣塑增強塑料)、纖維狀(如玻璃纖維或玻璃布增強塑料)、片狀(如云母增強塑料)三種。按材質可分為布基增強塑料(如碎布增強或石棉增強塑料)、無機礦物填充塑料(如石英或云母填充塑料)、纖維增強塑料(如碳纖維增強塑料)三種。

公(gong)稱通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)是(shi)(shi)管(guan)路(lu)(lu)系統中所有管(guan)路(lu)(lu)附件(jian)用(yong)數(shu)字(zi)表示(shi)的(de)尺(chi)寸(cun)，PPH加料(liao)桶(tong)報價，公(gong)稱通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)是(shi)(shi)供參考(kao)用(yong)的(de)一個(ge)方便(bian)的(de)圓整數(shu)，與(yu)加工尺(chi)寸(cun)僅呈不嚴格的(de)關系。公(gong)稱通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)用(yong)字(zi)母“DN”或“dn”表示(shi)，PPH加料(liao)桶(tong)生產廠家，后(hou)面(mian)緊跟(gen)一個(ge)數(shu)字(zi)標志。如：DN63，表示(shi)鋼(gang)管(guan)囗徑(jing)(jing)(jing)(jing)（通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)，也稱內徑(jing)(jing)(jing)(jing)）為63mm。DN是(shi)(shi)公(gong)稱通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)，是(shi)(shi)各種(zhong)管(guan)子與(yu)管(guan)路(lu)(lu)附件(jian)的(de)通(tong)(tong)(tong)(tong)(tong)用(yong)口徑(jing)(jing)(jing)(jing)。同(tong)一公(gong)稱通(tong)(tong)(tong)(tong)(tong)徑(jing)(jing)(jing)(jing)的(de)管(guan)子與(yu)管(guan)路(lu)(lu)附件(jian)均(jun)能相互連接，具(ju)有互換性(xing)。但它不是(shi)(shi)實際意義上(shang)的(de)管(guan)道(dao)內徑(jing)(jing)(jing)(jing)，雖然(ran)其數(shu)值跟(gen)管(guan)道(dao)內徑(jing)(jing)(jing)(jing)較為接近或相等(deng)。