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Sanfitec Brass Industry Co.,Ltd.
Sanfitec Brass Industry Co.,Ltd.

How Does Sanfitec, a High Quality Brass Fittings Supplier, Control the Quality?

The quality control of all products of Shengtai is completely controlled in accordance with the ISO9001 system. The quality of the products has always been the top priority, which starts from the details. It has been continuously inspecting and improving throughout the production process to achieve the goal of 100% leak-proof.


Our brass fittings china company adopts a standard quality control system, which has obtained system certification based on international standards ISO9001 and ISO14001 management system. The quality control system has passed PDCA's (Plan-do-check-action) cycle management and will continuously improve.


(1) Develop a standardized quality management system and develop a staff training plan.


(2) During the production process, check whether the product meets the requirements according to the drawings and technical standard documents.


(3) Carry out quality inspection and control on each process of product production, and issue corresponding quality reports.


(4) For example, basing on the actual inspection results and reports of our oem brass elbow fittings, we analyze the reasons and formulate corrective measures and mechanisms.


Quality Control Plan Table

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(F543RSNOD5050-1本体带LOGO 产品加工控制计划:F543RSNOD5050-1 main body with LOGO product processing control plan)


铜棒 冶炼炉 材质/外径/外观 主要 符合材质成分(见57-3化学成本要求) 光谱仪/卡尺/目视 批量 材质检测报告 来料检测报告 按过程管理控制程序进行


Copper rod; smelting furnac;e Material/outer diameter/appearance; Main; meets material composition (see 57-3 chemical cost requirements;) Spectrometer/caliper/visual; batch; Material inspection report; Incoming inspection report; According to process management control procedures

下料 外观及长度 一般 长度37 外径 螺距 卡尺/角度尺 每两小时 QC巡检记录表 按过程管理控制程序进行

Lay-off; Appearance and Length; General; Length: 37; Outer Diameter; Thread Pitch; Caliper/Angle Ruler; Every two hours; QC inspection record sheet; According to process management control procedures

数控 外观/尺寸 主要 尺寸 螺距 卡尺/目视 每两小时 首件确认单 QC巡检记录表 按过程管理控制程序进行

CNC; Appearance/Dimensions; Main; Dimensions; Pitch; Calipers/Visual Inspection; Every two hours; First Article Confirmation Form; QC Inspection Record Form  According to the process management control program

冲床 外观/字体 一般 字体 字高 目测 每两小时 首件确认单 QC巡检记录表 按过程管理控制程序进行

Punch; Appearance/font; General; font; Font height; Visual inspection; Every two hours; First article confirmation sheet; QC inspection record sheet; According to process management control procedures

数控 外观/尺寸 主要 尺寸 卡尺/螺纹环规 每两小时 首件确认单 QC巡检记录表 按过程管理控制程序进行

CN;C Appearance/Dimensions; Main; Dimensions; Calipers/Threaded Ring Gauges; Every Two Hours First; Article Confirmation Sheet;  QC Inspection Record Form; According to process management control procedures

外发电镀 外观 主要 参照样品 目测 批量 来料检验报告 按过程管理控制程序进行

Outgoing electroplating; Appearance; Main; reference sample; Visual inspection; Batch incoming inspection report; According to process management control procedures

包装 外观 一般 按包装指示进行 样品对照 批量 包装点检表 按过程管理控制程序进行

Packaging; Appearance; General; Follow the packaging instructions; Sample comparison; Batch packaging inspection table; Follow the process management control procedures)


Analysis of CPK Process Capability Index

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8D Quality Report

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2. 客户投诉:R1/2螺纹端内孔直径10未加工,导致孔不通水

(2. Customer complaint: the diameter of the inner hole of the R1/2 threaded end is 10 unprocessed, which causes the hole to be impervious to water)


3. 现生产的订单号XXXXXXX中135094产品100%外观全检,杜绝类似不良现象

(3. The 135094 products in the current production order number XXXXXXX are 100% inspected in appearance to prevent similar undesirable phenomena)


4.此不良现象是加工过程中刀具的损坏(断刀)导致直径10的内孔未加工

根据不良品对照我司的产品发现有所不同之处,详见如下:

(4. This undesirable phenomenon is the damage of the tool (cutting tool) during the machining process, which causes the inner hole of diameter 10 to be unprocessed

According to the defective products compared with our products, the differences are found as follows:)


1. 不良品上的字体没有“DR”字体,我司的每个产品上都有“DR”字体。(详见附件对比图片)

1. The fonts on defective products do not have "DR" fonts, and each of our brass fittings suppliers products has "DR" fonts. (See the attached comparison picture for details)


2. 本体上的字体“R1/2”与我司的字体尺寸不符,我司的字体宽度7.7mm,高度3.5mm。

2. The font "R1/2" on the body does not match our font size. Our font has a width of 7.7mm and a height of 3.5mm.


3. 我司在加工时产品周围夹具的固定点痕迹,而不良品周围没有一处夹具固定点痕迹(详见附件对比图片)

3. During the processing of our company, there is no trace of the fixed point of the fixture around the product, but there is no trace of the fixed point of the fixture around the defective product (see the attached comparison picture for details)


4. 不良品“R1/2”螺纹根部的外倒角角度30度,我司的外倒角只有15度(详见附件对比图片)

4. The outer chamfer angle of the defective product "R1/2" thread root is 30 degrees, and the outer chamfer angle of our company is only 15 degrees (see the attached comparison picture for details)


1. 我司产品100%气压测试

1. 100% air pressure test of our products


2. 专业人员进行100%外观全检

2. Professionals conduct 100% appearance inspection


3. 已对相关部门与人员进行宣导

3. The relevant departments and personnel have been promoted