用途
該鋼筋在任意截面處都擰上帶有內螺紋的連線器進行連線或擰上帶螺紋的螺帽進行錨固。
精軋螺紋鋼筋廣泛套用於大型水利工程、工業和民用建築中的連續梁和大型框架結構，公路、鐵路大中跨橋樑、核電站及地錨等工程。它具有連線、錨固簡便，粘著力強，張拉錨固安全可靠，施工方便等優點，而且節約鋼筋，減少構件面積和重量。
High strength planished concrete renforcing bar is the largediameter,high strength precision straight steel bar with male thread on the whole bar.This bar can be connected with the jointer at any cross section or screwed with the nuts with female screw for fixing.
Planished concrete renforcingbar is widely used for large irrgation works,industrial workshops,large and middle bridges lf road and railway,nuclear stations,anchor blocks and so on.Easy to connect and fixe,high abhesivity,safe and reliable to use,convenience to operate,Using them can reduce steel bars,cross area and weight of the stuctural members.
強度等級代號
預應力混凝土用螺紋鋼筋以屈服強度劃分級別，其代號為“PSB”加上規定屈服強度最小值表示。P、S、B分別為Prestressing、Screw、Bars的英文首位字母。例如：PSB830表示屈服強度最小值為830MPa的鋼筋，（通常用PSB830表示）。訂貨的契約至少應包括下列內容：
a）本標準編號；
b)產品名稱；
c)產品強度等級代號；
d)規格及重量（或數量）；
