碳钢弯头的刚性较差，适用于压力p≤4MPa的场合；对焊弯头又称高颈弯头，刚性较大，适用于压力温度较高的场合。弯头密封面的型式有三种：平面型密封面，适用于压力不高、介质的场合；凹凸密封面，适用于压力稍高的场合；榫槽密封面，适用于易燃、易爆、有毒介质及压力较高的场合。
碳钢弯头(HG20600、GB/T9121、JB/T83)制作较为简单，主要适用于具有腐蚀介质的管道系统；弯头和平焊环可采用不同的材料，降低弯头成本，提高使用性能。弯头密封面有突面、凹凸面、榫槽面.
使管子与管子相互连接的零件，连接于管端。弯头上有孔眼，螺栓使两弯头紧连。弯头间用衬垫密封。弯头管件(flanged pipe fittings)指带有弯头(突缘或接盘)的管件。它可由浇铸而成(图暂缺)，也可由螺纹连接或焊接构成。弯头联接(flange，joint)由一对弯头、一个垫片及若干个螺栓螺母组成。垫片放在两弯头密封面之间，拧紧螺母后，垫片表面上的比压达到数值后产生变形，并填满密封面上凹凸不平处，使联接严密不漏。弯头联接是一种可拆联接。
碳钢弯头材质是碳钢的弯头叫碳钢弯头
碳钢弯头就是两个大口径管道的连接装置，通常是两个弯头片加若干紧固螺栓。碳钢弯头就是碳素钢制成的弯头。低碳钢塑性好强度低，加入适量碳元素后就会变得坚硬，塑性降低强度增强。弯头连接有可能需要承受很高抗拉、抗压、抗扭、抗剪强度，碳钢弯头就是较好的选择.
弯头也叫弯头盘。弯头连接就是把两个管道、管件或器材，先各自固定在一个弯头盘上，两个弯头盘之间，加上弯头垫，用螺栓紧固在一起，完成了连接。有的管件和器材已经自带弯头盘，也是属于弯头连接。
弯头分螺纹连接（丝接）弯头和焊接弯头。低压小直径有丝接弯头，高压和低压大直径都是使用焊接弯头，不同压力的弯头盘的厚度和连接螺栓直径和数量是不同的。
根据压力的不同等级，弯头垫也有不同材料，从低压石棉垫、高压石棉垫到金属垫都有。
弯头连接使用方便，能够承受较大的压力。 弯头连接是管道施工的重要连接方式。
Less rigid carbon steel elbow, apply pressure p ≤ 4MPa occasions; butt welding elbow, also known as high-neck elbow, more rigid, suitable for high pressure and temperature situations.Elbow sealing surface, there are three types: planar sealing surface for the pressure is not high, medium non-toxic occasions; uneven sealing surface for the higher pressure situations; tongue and groove sealing surface, suitable for flammable and explosive , toxic medium and high pressure situations.
Carbon steel elbow (HG20600, GB/T9121, JB/T83) produced relatively simple, mainly applied to pipe systems with corrosive media; elbow peace weld different materials can be used to reduce elbow costs and improve performance. Sealing surface of a sudden bend surface, uneven surface, tongue and groove face.
Tube and pipe connected to the part, connected to the pipe end. Elbow on a hole, bolt to close with two elbow. Sealed with a gasket between the elbow. Elbow Fittings (flanged pipe fittings) that with the elbow (or access plate flange) of the tube. It is made by casting (Figure not available), may also be threaded or welded form. Elbow connection (flange, joint) by a pair of elbow, a washer and nut composed of several bolts. Gasket on the sealing surface between the two elbows, tighten the nut, the gasket surface pressure reaches a certain value than the distortion, and fill uneven sealing surface, thus making the connection does not leak tight. Elbow connection is a removable connection.
Carbon Steel Elbow Carbon Steel Elbow material is carbon steel elbow steel elbow is called the large-diameter pipeline to connect the two devices, usually two elbow pieces plus a number of fastening bolts. Carbon steel elbow is made of carbon steel elbow. Good strength and low ductility low carbon steel, after adding suitable amount of carbon will become hard, plastic lower intensity. Elbow connections may need to withstand very high tensile, compressive, torsional, shear strength, carbon steel elbow is the better choice.
Elbow is also called elbow plate. Elbow connection is to the two pipes, fittings or equipment, fixed at a bend their first disc, the disc between the two elbows, plus elbow pads, together with the bolts are tightened to complete the connection. Some fittings and equipment have built-bend plate, also belong to elbow connection.
Elbow sub thread connection (screwed) elbow and welding elbow. Low voltage and small diameter wire then bends, high and low pressure are the use of large diameter welded elbow, elbow different pressure connection plate thickness and bolt diameter and the number is different.
According to the different pressure levels, elbow pads have different material, aestos from the low pressure pad, pressure pad to the metal pads are aestos.
Elbow connections easy to use, able to withstand greater pressure. Elbow connection is an important connection pipeline construction.
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