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碳钢弯头厂家清仓，河北乾特管道设备有限公司<SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal">是河北一家大型的<A href="http://www.hbjjnnj.cn/index.html" target=_blank>管件厂家</A><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; BACKGROUND: rgb(255,255,255); LETTER-SPACING: 0pt; COLOR: rgb(0,0,0); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal">、<A href="http://www.hbjjnnj.cn/wantou/index.html" target=_blank>弯头厂家</A>、<A href="http://www.hbjjnnj.cn/sregerh/index.html" target=_blank>法兰厂家</A>，主要生产：<A href="http://www.hbjjnnj.cn/wantou/duihanwantou/index.html" target=_blank>对焊弯头</A>、<A href="http://www.hbjjnnj.cn/wantou/tangangwantou/index.html" target=_blank>碳钢弯头</A>等产品。公司产品应用广泛，了解更多详情欢迎登录<SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(63,63,63); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal">：<SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal"><A href="http://www.hbjjnnj.cn">www.hbjjnnj.cn</A>
<SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(63,63,63); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal"><SPAN style="WIDOWS: 2; TEXT-TRANSFORM: none; BACKGROUND-COLOR: rgb(255,255,255); FONT-STYLE: normal; TEXT-INDENT: 0px; FONT-FAMILY: 宋体, verdana, arial, helvetica, sans-serif; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(100,100,100); FONT-WEIGHT: normal; WORD-SPACING: 0px; webkit-text-stroke-width: 0px; font-variant-ligatures: normal; font-variant-caps: normal">无缝弯头:弯头是用于管道转弯处的一种管件。在管道系统所使用的全部管件中，所占比例大，约为80%。通常，对不同材料或壁厚的弯头选择不同的成形工艺。制造厂常用的无缝弯头成形工艺有热推、冲压、挤压等。 热推成形 　　热推弯头成形工艺是采用专用弯头推制机、芯模和加热装置，使套在模具上的坯料在推制机的推动下向前运动，在运动中被加热、扩径并弯曲成形的过程。 热推弯头的变形特点是根据金属材料塑性变形前后体积不变的规律确定管坯直径，所采用的管坯直径小于弯头直径，通过芯模控制坯料的变形过程，使内弧处被压缩的金属流动，补偿到因扩径而减薄的其它部位，从而得到壁厚均匀的弯头。 <A href="http://www.hbjjnnj.cn/wantou/chongyawantou/index.html" target=_blank><IMG style="BORDER-BOTTOM: rgb(200,200,200) 1px solid; BORDER-LEFT: rgb(200,200,200) 1px solid; PADDING-BOTTOM: 2px; PADDING-LEFT: 2px; PADDING-RIGHT: 2px; BORDER-TOP: rgb(200,200,200) 1px solid; BORDER-RIGHT: rgb(200,200,200) 1px solid; PADDING-TOP: 2px" border=0 src="http://www.hbjjnnj.cn/upfiles/proimages/201791210495932800.jpg" width=150 height=113></A>
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