日标矩形管JIS-G0404
日标方管：流量—效率曲线它的曲线象山头形状，当流量为零时，效率也等于零，随着流量的增大，效率也逐渐的增加，但增加到一定数值之后效率就下降了，效率有一个值，在效率点附近，效率都比较高，这个区域称为率区。合理配置、安全运行、优质供水以上四个方面了解了离心泵构造，工作原理、特性曲线以后，如何合理配置电机水泵的功率，是保证水泵的安全运行，优质供水，降低生产成本的关键，合理配置水泵功率，发挥水泵工作区域的安全运行，我厂供水的实际情况，足已说明设备合理配置的重要性、可靠性和经济性。
日标方矩管尺寸表：
150x75x6MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (19.34 KG/M)
140x140x5MM (SHS) SQUARE STEEL HOLLOW SECTION (21.10 KG/M)
150x100x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (18.70 KG/M)
140x140x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (26.30 KG/M)
150x100x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (23.30 KG/M)
140x140x8MM (SHS) SQUARE STEEL HOLLOW SECTION (32.90 KG/M)
150x100x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (29.10 KG/M)
140x140x10MM (SHS) SQUARE STEEL HOLLOW SECTION (40.40 KG/M)
150x100x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (35.70 KG/M)
140x140x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (49.50 KG/M)
150x100x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (43.60 KG/M)
150x150x5MM (SHS) SQUARE STEEL HOLLOW SECTION (22.70 KG/M)
160x80x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (18.00 KG/M)
150x150x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (28.30 KG/M)
160x80x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (22.30 KG/M)
150x150x8MM (SHS) SQUARE STEEL HOLLOW SECTION (35.40 KG/M)
160x80x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (27.90 KG/M)
150x150x10MM (SHS) SQUARE STEEL HOLLOW SECTION (43.60 KG/M)
160x80x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (34.20 KG/M)
150x150x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (53.40 KG/M)
200x100x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (22.70 KG/M)
150x150x16MM (SHS) SQUARE STEEL HOLLOW SECTION (66.40 KG/M)
200x100x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (28.30 KG/M)
180x180x5MM (SHS) SQUARE STEEL HOLLOW SECTION (27.40 KG/M)
200x100x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (35.40 KG/M)
日标矩形管参数表：
180x180x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (34.20 KG/M)
200x100x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (43.60 KG/M)
180x180x8MM (SHS) SQUARE STEEL HOLLOW SECTION (43.00 KG/M)
200x100x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (53.40 KG/M)
180x180x10MM (SHS) SQUARE STEEL HOLLOW SECTION (53.00 KG/M)
200x100x16MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (66.40 KG/M)
180x180x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (65.20 KG/M)
250x150x5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (30.50 KG/M)
180x180x16MM (SHS) SQUARE STEEL HOLLOW SECTION (81.40 KG/M)
250x150x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (38.20 KG/M)
200x200x5MM (SHS) SQUARE STEEL HOLLOW SECTION (30.50 KG/M)
250x150x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (48.00 KG/M)
200x200x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (38.20 KG/M)
250x150x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (59.30 KG/M)
200x200x8MM (SHS) SQUARE STEEL HOLLOW SECTION (48.00 KG/M)
250x150x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (73.00 KG/M)
200x200x10MM (SHS) SQUARE STEEL HOLLOW SECTION (59.30 KG/M)
250x150x16MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (91.50 KG/M)
200x200x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION(73.00 KG/M)
300x200x6.3MM(RHS) RECTANGULAR STEEL HOLLOW SECTION (48.10 KG/M)
200x200x16MM (SHS) SQUARE STEEL HOLLOW SECTION (91.50 KG/M)
300x200x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (60.50 KG/M)
250x250x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (48.10 KG/M)
300x200x10MM(RHS) RECTANGULAR STEEL HOLLOW SECTION (75.00 KG/M)
250x250x8MM (SHS) SQUARE STEEL HOLLOW SECTION (60.50 KG/M)
日标管材重量表：
300x200x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (92.60 KG/M)
250x250x10MM (SHS) SQUARE STEEL HOLLOW SECTION (75.00 KG/M)
300x200x16MM(RHS) RECTANGULAR STEEL HOLLOW SECTION (117.00 KG/M)
250x250x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (92.60 KG/M)
400x200x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (73.10 KG/M)
250x250x16MM (SHS) SQUARE STEEL HOLLOW SECTION (117.00 KG/M)
400x200x10MM(RHS) RECTANGULAR STEEL HOLLOW SECTION (90.70 KG/M)
300x300x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (57.90 KG/M)
400x200x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (112.00 KG/M)
300x300x8MM (SHS) SQUARE STEEL HOLLOW SECTION (73.10 KG/M)
400x200x16MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (142.00 KG/M)
300x300x10MM (SHS) SQUARE STEEL HOLLOW SECTION (90.70 KG/M)
450x250x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (85.70 KG/M)
300x300x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (112.00 KG/M)
450x250x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (106.00 KG/M)
300x300x16MM (SHS) SQUARE STEEL HOLLOW SECTION (142.00 KG/M)
450x250x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (132.00 KG/M)
350x350x8MM (SHS) SQUARE STEEL HOLLOW SECTION (85.70 KG/M)
450x250x16MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (167.00 KG/M)
350x350x10MM (SHS) SQUARE STEEL HOLLOW SECTION (106.00 KG/M)
500x200x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (85.70 KG/M)
350x350x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (132.00 KG/M)
500x200x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (106.00 KG/M)
350x350x16MM (SHS) SQUARE STEEL HOLLOW SECTION (167.00 KG/M)
500x200x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (132.00 KG/M)
400x400x10MM (SHS) SQUARE STEEL HOLLOW SECTION (122.00 KG/M)
500x200x16MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (167.00 KG/M)
400x400x12.5MM (SHS) SQUARE STEEL HOLLOW SECTION (152.00 KG/M)
500x300x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (122.00 KG/M)
400x400x16MM (SHS) SQUARE STEEL HOLLOW SECTION (192.00 KG/M)
500x300x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (152.00 KG/M)
500x300x16MM (RHS) RECTANGULAR STEEL
STKR400方矩管：
为此，会同保护渣生产厂家，对保护渣性能开展相关研究、改进、调整工作，按钢种、断面确定了8种系列保护渣，以适用该厂大圆坯连铸生产的需要。2二冷喷嘴与布置的改进根据铸坯表面开裂和皮下裂纹特征分析，主要是二冷冷却不均问题造成的。对外方提供的喷嘴和国产转化的喷嘴测试，确认外方提供的喷嘴和国产转化的喷嘴存在：使用喷嘴实际喷射角小于设计要求，两个喷嘴之间的铸坯部位存在无水覆盖死区，该区域铸坯坯壳薄、强度低，在热应力作用下容易出现开裂;喷嘴流量选型大，水压低，雾化效果变差;水流密度分布不对称外方设计喷嘴布置为内外弧和两侧交叉垂直的4个方向喷水冷却，在客观上也造成了铸坯冷却不均问题。