日标方矩管：二段弱磁选磁场强度试验在二段磨矿细度为－2目占85％的条件下，进行了二段弱磁选磁场强度试验二段弱磁选磁场强度试验结果表明，随着磁场强度的增强，铁精矿品位变化不明显，铁回收率略有提高。综合考虑，确定二段弱磁选磁场强度为99.52kA/m。流程试验根据上述条件试验结果，按进行了流程试验，获得的技术指标。试验结果表明，对某低品位钒钛磁铁矿采用粗粒抛尾－阶段磨选工艺流程选铁，在原矿Fe品位为18.36%、TiO2品位为8.11%的条件下，可获得铁精矿Fe品位57.8%、含TiO211.92%、Fe回收率53.16%的较好试验指标。
日标矩形管尺寸表：
20x20x2MM (SHS) SQUARE STEEL HOLLOW SECTION (1.12 KG/M)
40x25x2MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (1.83 KG/M)
20x20x2.5MM (SHS) SQUARE STEEL HOLLOW SECTION (1.35 KG/M)
40x25x2.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (2.23 KG/M)
25x25x2MM (SHS) SQUARE STEEL HOLLOW SECTION (1.43 KG/M)
50x20x2MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (1.96 KG/M)
25x25x2.5MM (SHS) SQUARE STEEL HOLLOW SECTION (1.74 KG/M)
50x25x2.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (2.62 KG/M)
25x25x3MM (SHS) SQUARE STEEL HOLLOW SECTION (2.04 KG/M)
50x25x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (3.07 KG/M)
30x30x2MM (SHS) SQUARE STEEL HOLLOW SECTION (1.68 KG/M)
50x30x2.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (2.92 KG/M)
30x30x2.5MM (SHS) SQUARE STEEL HOLLOW SECTION (2.14 KG/M)
50x30x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (3.45 KG/M)
30x30x3MM (SHS) SQUARE STEEL HOLLOW SECTION (2.51 KG/M)
50x40x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (3.77 KG/M)
40x40x2MM (SHS) SQUARE STEEL HOLLOW SECTION (2.31 KG/M)
60x30x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (3.77 KG/M)
日标方矩型管理重表：
80x40x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (12.80 KG/M)
70x70x3MM (SHS) SQUARE STEEL HOLLOW SECTION (6.28 KG/M)
80x50x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (5.66 KG/M)
70x70x3.6MM (SHS) SQUARE STEEL HOLLOW SECTION (7.46 KG/M)
80x50x4MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (7.34 KG/M)
70x70x5MM (SHS) SQUARE STEEL HOLLOW SECTION (10.11 KG/M)
90x50x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (6.13 KG/M)
70x70x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (12.50 KG/M)
90x50x3.6MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (7.24 KG/M)
70x70x8MM (SHS) SQUARE STEEL HOLLOW SECTION (15.30 KG/M)
90x50x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (9.70 KG/M)
80x80x3MM (SHS) SQUARE STEEL HOLLOW SECTION (7.22 KG/M)
100x50x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (6.60 KG/M)
80x80x3.6MM (SHS) SQUARE STEEL HOLLOW SECTION (8.59 KG/M)
100x50x4MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (8.86 KG/M)
80x80x5MM (SHS) SQUARE STEEL HOLLOW SECTION (11.70 KG/M)
100x50x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (10.90 KG/M)
80x80x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (14.40 KG/M)
100x50x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (13.40 KG/M)
80x80x8MM (SHS) SQUARE STEEL HOLLOW SECTION (17.80 KG/M)
100x50x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (16.60 KG/M)
90x90x3.6MM (SHS) SQUARE STEEL HOLLOW SECTION (9.72 KG/M)
100x60x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (7.22 KG/M)
90x90x5MM (SHS) SQUARE STEEL HOLLOW SECTION (13.30 KG/M)
100x60x3.6MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (8.59 KG/M)
90x90x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (16.40 KG/M)
100x60x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (11.70 KG/M)
日标方矩管理论重量表：
100x60x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (14.40 KG/M)
100x100x3MM (SHS) SQUARE STEEL HOLLOW SECTION (8.69 KG/M)
100x60x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (17.80 KG/M)
100x100x4MM (SHS) SQUARE STEEL HOLLOW SECTION (12.00 KG/M)
120x60x3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (8.01 KG/M)
100x100x5MM (SHS) SQUARE STEEL HOLLOW SECTION (14.80 KG/M)
120x60x3.6MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (9.72 KG/M)
100x100x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (18.40 KG/M)
120x60x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (13.30 KG/M)
100x100x8MM (SHS) SQUARE STEEL HOLLOW SECTION (22.90 KG/M)
120x60x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (16.40 KG/M)
100x100x10MM (SHS) SQUARE STEEL HOLLOW SECTION (27.90 KG/M)
120x80x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (14.80 KG/M)
120x120x5MM (SHS) SQUARE STEEL HOLLOW SECTION (18.00 KG/M)
120x80x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (18.40 KG/M)
120x120x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (22.30 KG/M)
120x80x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (22.9 KG/M)
120x120x8MM (SHS) SQUARE STEEL HOLLOW SECTION (27.90 KG/M)
120x80x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (27.9 KG/M)
120x120x10MM (SHS) SQUARE STEEL HOLLOW SECTION (34.20 KG/M)
150x75x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (16.37 KG/M)
120x120x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (41.60 KG/M)
日标型钢：
****在有关压力容器的技术规范中，密封计算都归属于法兰设计或法兰螺栓连接部分，而且都以法兰、螺栓的受力分析和计算为主要内容。这里不重复有关法兰的计算，重点介绍垫片计算与密封性能的校核。华特斯计算法目前，我国的《钢制石油化工压力容器设计规定》与英国、日本有关压力容器规范一样，基本是沿用美国《ASME》规范，法兰和密封的设计采用华斯特法。这种方法在密封性能的计算方面强调螺栓的强度，华斯特认为：在各种情况下，只要螺栓强度足够，作用在垫片上的螺栓力不小于设计值，即能保证垫片和密封面的紧密连接。在操作情况下所需的螺栓载荷Fm1（N）和在预紧螺栓时所需的螺栓载荷Fm2（N）2.垫片计算密封宽度垫片计算密封宽度b可如下确定：当bo≤.64m时，b=bo，从表3-5可见，垫片的有效密封宽度bo不等于垫片与压紧面的实际接触宽度N。此因垫圈置于螺栓孔内侧时，螺栓力使法兰产生一定程度的偏转。内压建立后，介质压力产生的轴向力加剧偏转。压紧力并不是均匀分布在整个接触面上，二是外缘紧、内缘松，介质可能渗透到垫圈的某一宽度，而且垫片宽度愈大，这种现象愈严重，所以计算宽度b≤bo，DG的计算方法也随bo变化。螺栓总截面积的计算西德DIN255法西德标准DIN255“法兰连接计算”中，垫片计算部分与我国现行规范有所不同，其步骤分为下列几个：计算结束后，还需作受力图。将升压升温过程中法兰、螺栓、垫片变形量算出并反映在一张图上，以便了解在操作情况下，是否因过度松弛，需要在预紧时采用更高的螺栓力或另选垫片。系数法国内有关单位在探讨垫片密封性能设计方法时曾作过大量工作。现将该计算方法作一简介。对三种计算方法的讨论《ASME规范》作为美国的国家标准，在世界上影响很大。
