TP1A2-505G梯式梯称梯边多孔（正称）桥架 →

TP/R1A2-505G梯式梯称多孔（正称）桥架 →

T1A2-505G梯式（反称）桥架 →

LP1A2-505G自锁多孔桥架 →

L1A2-505G自锁桥架 →

WP1A2-505G水滴边多孔桥架 →

W1A2-505G水滴边桥架 →

RP1A2-505G圆弧边多孔桥架 →

R1A2-505G圆弧边桥架 →

P1A2-505G多孔桥架 →

C1A2-505G 槽式桥架 →