唐山方管市场价格弱稳运行厂家对年前的市场…方管唐山方管市场价格窄幅下探。周末期间方管厂家出货情况依旧较为惨淡，早间开盘期螺低位震荡运行，目前唐山方管成品库存处于较高水平，盘中方管厂家优惠出货力度增加但是外围市场观望心态较浓，部分方管厂家对年前的市场并不看好，开始做累库年后销售计划。唐山昌黎普碳方坯价格从1月13日——1月30日钢坯执行节…

方管强度是指焊接方管资料正在静荷作用下抵制毁坏(适量塑性变形或者折断)的功能。因为负荷的作用形式有拉伸、紧缩、蜿蜒、剪切等方式，因为强度也分成抗拉强度、抗压强度、抗弯强度、抗剪强度等。各种强度间常有定然的联络，运用中正常较多以抗拉强度作为最根本的强度表针。

Square tube strength refers to the function of resisting damage (plastic deformation or fracture) of welded square tube data under static load. Because the load acts in the form of tension, contraction, winding, shearing and so on, because the strength is also divided into tensile strength, compressive strength, flexural strength, shear strength and so on. There is always a definite connection between various strengths. Tensile strength is the most basic strength gauge needle in normal use. 【1】焊接方管的功能指数分析-强度 以很大进度作用来机件上的负荷称为冲锋陷阵负荷，焊接方管正在冲锋陷阵负荷作用下抵制毁坏的威力所谓冲锋陷阵韧性。

[1] Functional index analysis of welded square pipe-the load on the machine parts is called the charge-sink-array load because of the great progress of strength. The resistance of welded square pipe to damage under the charge-sink-array load is called the impact-sink-array toughness.

【2】焊接方管的功能指数分析-冲锋陷阵韧性后面所议论的强度、塑性、角度都是金属正在静负荷作用下的机器功能表针。实践上，许多机械整机都是正在重复负荷雇用务的，正在这种环境下整机会发生疲倦。

[2] The strength, plasticity and angle discussed after the toughness of the impact sink array are all the machine function needles of the metal under static load. In practice, many machines are engaged under repeated loads. Under such circumstances, fatigue occurs in the whole machine.

【3】焊接方管的功能指数分析-疲倦罕用的方法有焊接方管布氏角度(HB)、洛氏角度(HRA、HRB、HRC)和维氏角度(HV)等方法。 角度是权衡金属资料软硬水平的表针。眼前生年中内定角度方法最罕用的是压入角度法，它是用定然多少何外形的压头正在定然负荷下压入被测试的金属资料表面，依据被压入水平来内定其角度值。

[3] Functional Index Analysis of Welded Square Pipe - The methods rarely used for fatigue analysis are Brinell Angle (HB), Rockwell Angle (HRA, HRB, HRC) and Vickers Angle (HV) of Welded Square Pipe. Angle is a gauge needle for weighing the hard and soft level of metal data. Pressure angle method is the most rarely used method in the current life. It uses a fixed number of shapes of the pressure head to press into the tested metal data surface under a fixed load, and to determine its angle value according to the level of pressure.

【4】焊接方管的功能指数分析-角度塑性是指焊接方管资料正在负荷作用下，发生塑性变形(永远变形)而不毁坏的威力。

[4] Functional index analysis of welded square pipe-angular plasticity refers to the power of plastic deformation (permanent deformation) without damage of welded square pipe data under load.

【5】焊接方管的功能指数分析-塑性方管厂家的力学功能

Functional Index Analysis of Welded Square Pipe-Mechanical Function of Plastic Square Pipe Manufacturer

方管市场价格主稳个调出货情况很不乐观方管方管市场价格主稳个调。主导市场，北京小涨、天津、上海和广州均以稳为主。上周五期螺夜盘低位震荡，今早开盘低位走弱，而消息面依旧 没有大的利好利空刺激，所以今日开市，市场普遍维稳观望，仅个别地区有所调整。午后盘面低位平稳运行，不过收盘前颇有加速下行之势，而现货市场在临近年关，基本没有行情，午后维持稳定走势… 成都市场方管价格或震荡偏强调整方管成都方管市场价小幅上调。外围市场：今日钢坯价格累涨30。现货市场大多积极跟涨。北京涨20-40，主流价格在3860；天津涨10-30；杭州大涨70，主流价格在4200-4210；广州同样大涨70.本地市场：今日成都市场上涨20-40，其中盘螺涨幅明显，据了解，由于南方市场涨幅较大，影响了成都地区交投情绪，然市场资源低位；故预计明日成都…