GB/T244-2020金属材料管弯曲试验方法2020.12.01实施，替代GB/T244-2008。GB/T244-2020标准适用于测定外径不大于65mm的圆形横截面金属管的全截面弯曲塑性变形能力。标准规定了金属管弯曲试验方法的试验原理、试验设备、试样、试验程序和试验报告。
GB/T244-2020标准修改内容：将管壁厚度符号由‘a’修改为‘t’，并修改了表1中管壁厚度符号的注；将全文‘弯心’修改为‘弯模’； 增加了特殊要求的试样可参照附录A进行弯曲试验；将‘对要求在控制条件下进行的试验’修改为‘对温度要求严格的试验’；将‘焊接管’修改为‘直缝焊管’；增加了资料性附录‘专用弯管试验机及试验方法’；修改采用ISO 8491金属材料管全截面弯曲试验；
65mm金属材料管弯曲试验机，实现金属材料管0°～90°任意角度弯曲试验，金属材料管弯曲角度实时显示，HRJ弯曲试验一键操控。HRJ滚转式弯曲试验装置，HRJ包覆式钢管弯曲沟槽，HRJ滚转式钢管沟槽支撑。测定外径≤65mm圆形横截面金属管全截面弯曲塑性变形能力。将不带填充物的管试样弯曲到规定角度，观测钢管是否产生裂纹、裂缝、裂口或离层。
51mm金属材料管弯曲试验机；48.3mm脚手架钢管全截面弯曲试验机；HRJ Tester；钢塑复合管10°弯曲试验机；jnshiyanji；钢塑复合管30°弯曲试验机；钢塑复合管90°弯曲试验机；金属材料管6倍径弯曲试验机；金属材料管8倍径弯曲试验机；33.7mm金属管弯曲试验机；42.4mm金属管弯曲试验机；47.5mm钢管弯曲试验机；60.3mm钢管弯曲试验机；2000kN金属材料管压扁试验机；HRJ Tester；2000kN金属材料管扩口试验机；1000kN无振动钢管拉伸试验机；200kN盘扣式脚手架构件试验机；3000N.m金属材料管扭转疲劳试验机；2000kN无振动伺服万能试验机；
GB/T32976-2016金属材料管横向弯曲试验方法；jnshiyanji；GB/T3091-2015低压流体输送用焊接钢管；GB/T28897-2012钢塑复合管；GB/T32958-2016流体输送用不锈钢复合钢管；GB/T8163-2018输送流体用无缝钢管；GB/T13793-2016直缝电焊钢管；GB/T32970-2016高温高压管道用直缝埋弧焊接钢管；CJ/T120-2016给水涂塑复合钢管；GB/T8162-2018结构用无缝钢管；GB/T3087低中压锅炉用无缝钢管；JGJ 128-2010建筑施工门式钢管脚手架安全技术规范；HRJ Tester；SH/T3555-2014石油化工工程钢脚手架搭设安全技术规范；GB 15831-2006钢管脚手架扣件；GB 24911-2010碗扣式钢管脚手架构件；JG/T503-2016承插型盘扣式钢管支架构件；GB 24910-2010钢板冲压扣件；JGJ/T414-2018建筑施工模板和脚手架试验标准；JG/T13-1999门式钢管脚手架；hrjtest；T/CMRA 01-2016承插型键槽式钢管脚手架；JIS A8951；JIS B0151-2018；ANSI/SSFI SC100；BS 1139-1.2；EN 12812；DIN BS NF EN 74-1；DIN BS NF EN74-2；SN EN 39-2001；hrjtest；JGJ 166-2016；JGJ 130-2011；JGJ 231-2010；JGJ 164-2008；JGJ 183-2009；JGJ 202-2010；JGJ 254-2011；GB 50068-2018；T/CEC 211-2019；TB/T2292；JC/T2287-2014；DL/T1209.4-2014E；CB 4204-2012；DB37/5008-2014
Metallic materials-Tube-Bend test method；Metallic materials-Tube (in full section)-Bend test；Metallic Materials Tube Bend Tester；Steel Pipes Bending Testing Machine；Welded steel pipes for low pressure liquid delivery；HRJ Tester；Steel pipes with a longitudinal electric (resistance) weld；Seamless steel pipes for liquid service；Seamless steel tubes for structural purposes；Seamless steel tubes for low and medium pressure boiler；Steel pipes of complex plastic；Technical code for safety of frame scaffoldings with steel tubules in construction；Technical code for safety of steel tubular scaffold with couplers in construction；HRJ Tester；Technical specification for construction safety of steel scaffold building in petrochemical industry；Couplers,spigot pins and baseplates for use in falsework and scaffolds:Couplers for tubes-Requirements and test procedures；Coating plastic steel pipe for water supply；Scaffolding couplers Testing Machine；Steel Pipes Bending Testing Machine；Gas Shear Valve Torsion Tester；Gas Shear Valve Bend Tester；Pipe Fittings Torsion Fatigue Tester；Various Testing Machines；Laboratory Equipment；China Material Tester；World Material Tester；jnshiyanji；Testing Machines Manufacturer；Mechanics Tester Manufacturer；Tester Service Center；hrjtest；Tester Fittings Supply Center；Test Accessories Design Manufacture Center；Special Test Accessories Center；Testing Machine Accessories；Material Tester Attachment；Material Tester Fixture；No Vibration Universal Materials Tester；No Vibration Servo Universal Tester；No Vibration Materials Mechanics Tester；No Vibration Materials Mechanics Strength Tester；Materials Axial Tensile Loading Strength Tester；Electro-hydraulic Servo Universal Tester；
济南恒瑞金试验机有限公司；金属材料管弯曲力学试验机；山东省力值硬度计量委员
（试验机服务中心）（试验机配件供应中心）（特殊夹具定制中心）
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