As per ASME Section VIII Div. 01 UW-03, there are four types of weld joint categories. Category A Weld Joint; Category B Weld Joint; Category C Weld Joint; Category D Weld Joint; To help you better understand the weld joint category, we’ve taken a snap from ASME sec VIII Div.1 which shows the sort of Joint category as shown below,

图uw-3例示每一类所含接头的典型位置。 类别划分中没有定义的焊接接头、图9－5夹套密封件与壳体接头及图26－13填角焊接头。 除非本册其他地方另有限制外，可以采用UW-9 a允许的焊缝接头类型。

2023年1月20日 · The location of joints in equipment is divided into categories as described in UW-3 and illustrated in Figure UW-3. For example, longitudinal joints fall under category A, circumferential joints fall under category B, welds in a welded neck flange fall under category C, and welds connecting nozzles to shells fall under category D.

2017年9月15日 · A visual primer on ASME VIII-1 joint efficiency. Shows RT-1, RT-2, RT-3 and two options of RT-4.

2022年6月13日 · For example, longitudinal shell seams are category A, circumferential seams are category B, and other categories are shown in Figure UW-3: A Type 1 vessel weld is a butt joint, welded from both sides to achieve full penetration. A Type 2 weld is a butt joint welded from one side, with a permanent backing strip left in place.

按UW-3，焊缝按其在容器上的位置分为A、B、C、D类。 A类：筒体、封头、锥体、平封头和接管上的纵缝，球形封头与筒体的焊缝。 B类：筒体、锥体和接管上的环缝，椭圆和碟形封头与筒体的焊缝。 C类：法兰、管板和平封头与筒体、封头、锥体和接管相焊的焊缝。 D类：接管与筒体、球体、锥体和封头的连接焊缝。 NPS 4接管上的对接环缝 (如有的话)不作RT。 NPS 4接管上的对接环焊缝（如有的话）不作RT探伤。 按UW-116 (e) (2)，铭牌上标有“RT-2”的容器，表示整台容 …

2020年11月5日 · Question 3: A shell is made with Type 3 weld-joints (Butt-weld-one-side-no-backing), and Full RT was performed on the weld-joints. What is the Joint Efficiency “E” for these weld-joints. A – 1, B – 0.85, C – 0.7, D – 0.9. Explanation: These are OPEN questions, Refer to Table UW-12. Explanation to Questions 1, 2, 3, 4

2017年2月22日 · Confusion exists when trying to determine if a single welded circ weld in a small vessel is type 1 or type 3. Our answer... Table UW-12 provides 8 types of welds with appropriate efficiencies to use when differing levels of radiography is applied.

2012年11月6日 · 이 특별요건은 어떤 주어진 분류의 이음에 대하여 특별히 지정된 경우에만 적용한다.각 분류에 포함되는 이음은 다음과 같이 분류 a,b,c 및 d의 이음으로 지정한다.각 분류에 포함된 일반적인 이음의 위치는 그림 uw-3과 같다.

UW3 Welds Ranking from ASME VIII Div 1 - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or view presentation slides online. The document defines four categories (A, B, C, D) for welded joints in vessels based on their location. Category A includes longitudinal, spiral and circumferential welds within pressure boundaries.