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浙江德威不锈钢管业制造有限公司
Zhejiang Dewei Stainless Steel Pipe Industry Co., Ltd
系人联 Contact: 力 (郑 Tony Zheng )
+86 13957333347
Email:406555519@qq.com
目录
Contents
企业简介 Company Profile
主要钢种 Material Available
检测设备 Testing Equipment
生产设备 Production Equipment
产品展示 Product Gallery
产品出货 Product Shipment
资质认证 Qualifications and Certificates
应用领域 Applications
合作伙伴 Business Partners
联系方式 Contact Us
企 使命业
Corporate Mission
致力于不锈钢管业的开发与生产, Committed to The Development and Production of Stainless Steel Pipe I
凭借优质的产品和服务, With Quality Products and Services
持续地为客户创造更大的价值。 Continuously to Create Greater Customer Value
愿景
Vision
成为国际知名的不锈钢管道系统制造商
To Become An Internationally Renowned Manufacturer of Stainless Steel Piping Systems
核心价值观
Core Values
厚德载物、养威蓄锐
Self-discipline . Persistence
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企 介业简
Company Profile
浙江德威不 管 制造有限公司 始于锈钢 业 创 1986 年,是一家 生 工 不 管及专业 产 业 锈钢焊
管件的企 ,嘉 地 江浙沪中心位置,距离上海浦 国 机业 兴 处 东 际 场 120 公里,距离虹 机桥
场 88 公里,杭州 山国 机萧 际 场 100 公里。
公司注册 本一 零三十万元人民 ,生 区占地面资 亿 币 产 积 10 万平方米, 投 三 五千总 资 亿
万元人民 ,年 不 管突破币 产 锈钢焊 50000 , 售 逾吨 销 额 15 元。亿
品 行国家 准(产 运 标 GB) ,化工行 准(业标 HG) ,石化行 准(业标 SH) 生 准组织 产标
和国 化 准 (际 标 组织 ISO ), 欧美国家 准,如德 (标 标 DIN), 美 (标 ASTM), 欧盟国家标
准( EN), 日 (标 JIS) 等,并且已 行美国石油 会执 协 API Q1 量体系,通质 过 API 5LC
,美国认证 ASME 认证 , 以及欧盟 PED 认证 , 德威申 的中国船 社(请 级 CCS) 、法国船
社级 (BV) 、英国 式船 社(劳 级 LR )、 威德国 式船 社(挪 劳 级 DNVGL )以及美国船级
社( ABS ) 正在 核中。认证 审
德威引 国 先 化的进 际 进 JCO 新型工 管生业焊 产线 , ¢ 630 自 生 机 及多套动连续 产线 组 单
面 接双面成型的德国等离子焊 焊 , 埋弧 机 ,生 的 管可分 直 、双直 和焊 组 产 焊 为单 缝 缝 环
接: (缝对 单缝 Φ6-Φ914 ),壁厚从 0.5mm 至 60mm ;双 (缝 630-1524 )壁厚从
2mm 至 80mm , (环缝 Φ914 以 上),壁厚从 2mm 到 100mm 。
目前公司所用的材 主要 : 基不质 为 镍 锈钢 (N08904,N06600,N08825 等 ) ,双相不锈钢
(S32750 、 S31803, S32205) ,奥氏体不锈钢
(310S 、 309S 、 316L 、 321 、 304L 、 304 等 ) 、 素体铁 (430, 409L 等 ) , 合铜镍
金 (C70600 , C70620) 及部分特殊钢种 (254SMO,S30815,253MA) 。
德威期待着与客 建立 期的合作 系,互利共 ,共同 展。户 长 关 赢 发
 Founded in 1986, Zhejiang Dewei Stainless Steel Pipe Industry Co.,Ltd.
is a professional manufacturer of welded stainless steel pipes & tubes
and fittings for industrial applications. Dewei is located at Jiaxing,
Zhejiang, China, with about 120 KM away from PVG (Shanghai Pudong
International airport), 88KM away from SHA (Shanghai Hongqiao
Airport),100KM away from HIA (Hangzhou International Airport).
With registered capital of 100.3 million RMB and total investment of 350
million RMB. Dewei has an annual production capacity of 50,000 tons
and sales of 1500 million RMB by 2015.
The production of Dewei not only comply with domestic quality-related
certificates, such as GB, HG and SH; it also follows international
standards, such as ISO,DIN,ASTM,EN, and JIS. Currently, Dewei has
been certified with API Spec Q1, API Spec 5LC, ASME and PED. Dewei
has submitted the documentation for the review of CCS, BV, LR,DNVGL,
ABS.
Dewei has equipped with JCO welding production line , ¢ 630
automatic continuous production line, multiple sets of single sided and
double sided German plasma, submerged arc welding equipment.
Dewei can produce the welded stainless steel pipes or tubes with single
straight seam (ф6-ф914, wall thickness from 0.5mm to 60mm), double
straight seam (ф630-ф1524, wall thickness from 2mm to 80mm), and
circular seam (above ф914, wall thickness from 2mm to 100mm).
Dewei’ s main stainless steel grades are: Ni-Alloys
(N08904,N06600,N08825,etc),Duplex(S32750,S31803,S3225,etc),
Austeni te (310S,309S,316L,321,304L,304 etc ), Copper Nickel Alloy
(C70600,C70630) and Ferrite (430,409L etc) and other special material
(254SMO,S30815,253MA).
Looking forward to building up and developing long-term cooperation
with mutual benefits.
BACK
主要钢种 Material Available
格尺寸规 Size
1. 奥氏体不锈钢 Austenitic Stainless Steel (310S 、 309S 、 316L 、 321 、 304L 、 304)
2. 双相钢 Duplex ( S32750,S31803, S32760 , S32205)
3. 基合金镍 Nickel-Base Alloy (N08904,N06600,N08825 )
4. 合金铜镍 Copper Nickel Alloy (C70600, C70620)
5. 素体铁 Ferrite (430, 409L)
6. 其他特殊材料 Other Special Materials (254SMO,S30815,253MA)
Single Straight Seam ( Φ6-Φ914 ) Wall Thickness 0.5mm-60mm
Double Straight Seam ( Φ630-Φ1524 ) Wall Thickness 2mm-80mm
Circular Seam ( above Φ914 ) Wall Thickness 2mm-100mm
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检测设备 Inspection Equipment
Brittleness Temperature Tester
低温冲击试验
Optical Emission Spectrometer
光 (全元素)直 光电 读 谱仪
Metallurgical Microscope
金相显微镜
Ultrasonic Flaw Detector
超生波无损检测机
X Ray Flaw Detection
X 射线实时成像检测机
High Temperature Tensile Testing Machine
高温拉伸试验机
Laboratory
实验室
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Hydrostatic Testing Machine
水压试验机
Eddy Current Flaw Detector
涡流探伤机
Intergranular Corrosion Equipment
晶间腐蚀装置
To achieve satisfy customers' expectations, Dewei is totally committed to implementing and maintaining the Quality Management System.
Quality problem arising in various areas are to be identified and solved with speed, technical and efficiency.
为实现客户的期望,德威致力于完全执行和实施质量管理体系,确保各个环节中出现的质量问题能够及时、迅速、专业地发现和解决。
Hardness-testing Device
硬度测试仪
Ultrasonic Thickness Gauge
超声波测厚仪
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生 装产 备 Production Equipment
开卷、纵切、收卷机组
Decoiling, Slitting and Rewinding Unit
小口径在线焊管机组
Small Caliber Pipe Production Line
JCO 焊管生产线
JCO Welding Production Line
龙门焊接操作机
Gantry Welding Machine
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JCO 焊管生产线
JCO Welding Production Line
厢式退火炉
Heat Treatment Furnace
龙门焊接操作机
Gantry Welding Machine
天然气退火炉
Gas Annealing Furnace
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品展示产 Product Gallery
焊管主要生产标准 :
Product Standards for Pipes:
美标:
ASTM A778,A312,A249,A269,A358,A409,A554,A668,A789,A790,A928
日标: JIS3459,JS3468
欧标: EN10217-(1--7)
国标: GB/T21832-2008 GB/T24593-2009 GB/T12771-2008,
化工: HG20537.1-92 HG20537.2-92 HG20537.3-92 HG20537.4-92
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品展示产 Product Gallery
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品展示产 Product Gallery
管件
根据不同安装使用条件,配套不锈钢管件、
(如弯头,异径管,三通,四通,弯管,翻边等)
常备库存尺寸 * ( 规格因材质而异 ):
3/8“ — 24” ( 17.15mm — 610.08mm )
生产标准
美标: ASTM A403 , ASME B16.9
国标: GB/T12459-2005 , GB/T13401-2005,SH3048 , SH3409;
德标: DIN2605,DIN2617
俄标: Гoct 17375—2001 , Гoct 17376—2001 , Гoct 17378—2001
欧标: EN10253-3 , EN10253-4 , ISO2037
法兰标准: ASME B 16.5 ASME B16.36
国标: GB9112--9124
* 大尺寸及特殊规格按订单制造。
Fittings
We supply ( seamless and welded ) pipe fittings (elbows, reducers, tees, bends, stubs)
for different applications.
Typical Stock Size Range* (size range might differ based on material grade):
3/8“ — 24” ( 17.15mm — 609.6mm )
*Larger sizes and project specific dimensions manufactured to order.
Production standards
American Standard : ASTM A403 , ASME B16.9
National Standard : GB/T12459-2005 , GB/T13401-2005,SH3048 , SH3409;
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品出产 货 Product Shipment
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品出产 货 Product Shipment
With good services and prompt delivery, Dewei has gradually established its corporate brand image.
凭借良好的服务,交货的及时,德威已逐步建立起其公司品牌形象。
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资质证书 Certification
企业法人营业执照
Business License
企业法人营业执照
Organization Code Certificate
税务登记证
Tax Registration Certificate;
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资质证书 Certification
ISO18001 职业健康安全管理体系
ISO18001 OHSAS Certification
ISO14001 环境管理体系认证
ISO 14001 Certification
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资质证书 Certification
特种设备制造许可
Manufacture License of Special Equipment
对外贸易经营者备案登记表
Foreign Trade Operator Registration
Form
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资质证书 Certification
压力管道元件型式试验证书
Pressure Pipeline Type Test
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资质证书 Certification
美国石油协会认证
API 5LC CRA Line Pipe (耐腐蚀合金管线钢管)
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资质证书 Certification
ISO 9001 2008 质量管理体系
ISO 9001:2008 Quality Management System Standards
欧盟 PED 认证
PED certificate
资质证书 Certification
德国莱茵 TÜV ASME 认证
TÜV Rheinland ASME Certificate
用 域应 领 Applications
LNG 液化天然气
LNG Liquefied Natural Gas
医药领域卫生用管
Pharmaceutical Sanitary Tubes
石油化工配管
Petrochemical Industry
化学品运输船
Chemical Tankers
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用 域应 领 Applications
码头工程
Wharf Engineering
电力装备
Electrical Conduits
污水处理
Wastewater Treatment
海洋工程
Ocean Engineering
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用 域应 领 Applications
食品级不锈钢管
Food-grade Stainless Steel Pipe
造纸设备
Paper Machinery
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企 合作 伴业 伙 Business Partners
以 品 量 秀、售后服 到位,及 的交 率,德威与国内外知名企 建立产 质 优 务 时 货 业
期合作,如太 、印尼金光集 、娃哈哈、 西、法国液空、中海油、长 阳纸业 团 鲁
中石油、中石化等。
Due to excellent after-sale service , high-quality products and prompt delivery,
Dewei established long-term cooperation with domestic and overseas well-
known enterprise , such as Sun Paper Company, Indonesia Sinar Mas Group,
Wahaha, Luxi, French Liquid Air, CNOOC, Petro China, Sinopec and so on.
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原材料及合作品牌 Raw Material & Brands
BACK
我联络 们 Welcome to Contact us
注册及工厂地址:浙江省嘉 市南湖区新丰 嘉 路兴 镇 钢 888 号, 314005
Registered &Factory Address: No.888 Jiagang Road, Xinfeng Town, Nanhu Dist., Jiaxing, Zhejiang,
China, 314005
售 部:浙江省嘉 市南湖区信 路 部商 花销 总 兴 诚 总 务 园 62 号, 314001
Headquarter Office : No.62 Headquarters Business Garden, Xincheng Road, Nanhu Dist.,
Jiaxing, Zhejiang, China, 314001
系人联 /Contact: 力 (郑 Tony Zheng ) +86 13957333347 Email:406555519@qq.com
http://www.deweigroup.cn/
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stainless steel piping material manufacturer

  • 1. 浙江德威不锈钢管业制造有限公司 Zhejiang Dewei Stainless Steel Pipe Industry Co., Ltd 系人联 Contact: 力 (郑 Tony Zheng ) +86 13957333347 Email:406555519@qq.com
  • 2. 目录 Contents 企业简介 Company Profile 主要钢种 Material Available 检测设备 Testing Equipment 生产设备 Production Equipment 产品展示 Product Gallery 产品出货 Product Shipment 资质认证 Qualifications and Certificates 应用领域 Applications 合作伙伴 Business Partners 联系方式 Contact Us
  • 3. 企 使命业 Corporate Mission 致力于不锈钢管业的开发与生产, Committed to The Development and Production of Stainless Steel Pipe I 凭借优质的产品和服务, With Quality Products and Services 持续地为客户创造更大的价值。 Continuously to Create Greater Customer Value 愿景 Vision 成为国际知名的不锈钢管道系统制造商 To Become An Internationally Renowned Manufacturer of Stainless Steel Piping Systems 核心价值观 Core Values 厚德载物、养威蓄锐 Self-discipline . Persistence BACK
  • 4. 企 介业简 Company Profile 浙江德威不 管 制造有限公司 始于锈钢 业 创 1986 年,是一家 生 工 不 管及专业 产 业 锈钢焊 管件的企 ,嘉 地 江浙沪中心位置,距离上海浦 国 机业 兴 处 东 际 场 120 公里,距离虹 机桥 场 88 公里,杭州 山国 机萧 际 场 100 公里。 公司注册 本一 零三十万元人民 ,生 区占地面资 亿 币 产 积 10 万平方米, 投 三 五千总 资 亿 万元人民 ,年 不 管突破币 产 锈钢焊 50000 , 售 逾吨 销 额 15 元。亿 品 行国家 准(产 运 标 GB) ,化工行 准(业标 HG) ,石化行 准(业标 SH) 生 准组织 产标 和国 化 准 (际 标 组织 ISO ), 欧美国家 准,如德 (标 标 DIN), 美 (标 ASTM), 欧盟国家标 准( EN), 日 (标 JIS) 等,并且已 行美国石油 会执 协 API Q1 量体系,通质 过 API 5LC ,美国认证 ASME 认证 , 以及欧盟 PED 认证 , 德威申 的中国船 社(请 级 CCS) 、法国船 社级 (BV) 、英国 式船 社(劳 级 LR )、 威德国 式船 社(挪 劳 级 DNVGL )以及美国船级 社( ABS ) 正在 核中。认证 审 德威引 国 先 化的进 际 进 JCO 新型工 管生业焊 产线 , ¢ 630 自 生 机 及多套动连续 产线 组 单 面 接双面成型的德国等离子焊 焊 , 埋弧 机 ,生 的 管可分 直 、双直 和焊 组 产 焊 为单 缝 缝 环 接: (缝对 单缝 Φ6-Φ914 ),壁厚从 0.5mm 至 60mm ;双 (缝 630-1524 )壁厚从 2mm 至 80mm , (环缝 Φ914 以 上),壁厚从 2mm 到 100mm 。 目前公司所用的材 主要 : 基不质 为 镍 锈钢 (N08904,N06600,N08825 等 ) ,双相不锈钢 (S32750 、 S31803, S32205) ,奥氏体不锈钢 (310S 、 309S 、 316L 、 321 、 304L 、 304 等 ) 、 素体铁 (430, 409L 等 ) , 合铜镍 金 (C70600 , C70620) 及部分特殊钢种 (254SMO,S30815,253MA) 。 德威期待着与客 建立 期的合作 系,互利共 ,共同 展。户 长 关 赢 发  Founded in 1986, Zhejiang Dewei Stainless Steel Pipe Industry Co.,Ltd. is a professional manufacturer of welded stainless steel pipes & tubes and fittings for industrial applications. Dewei is located at Jiaxing, Zhejiang, China, with about 120 KM away from PVG (Shanghai Pudong International airport), 88KM away from SHA (Shanghai Hongqiao Airport),100KM away from HIA (Hangzhou International Airport). With registered capital of 100.3 million RMB and total investment of 350 million RMB. Dewei has an annual production capacity of 50,000 tons and sales of 1500 million RMB by 2015. The production of Dewei not only comply with domestic quality-related certificates, such as GB, HG and SH; it also follows international standards, such as ISO,DIN,ASTM,EN, and JIS. Currently, Dewei has been certified with API Spec Q1, API Spec 5LC, ASME and PED. Dewei has submitted the documentation for the review of CCS, BV, LR,DNVGL, ABS. Dewei has equipped with JCO welding production line , ¢ 630 automatic continuous production line, multiple sets of single sided and double sided German plasma, submerged arc welding equipment. Dewei can produce the welded stainless steel pipes or tubes with single straight seam (ф6-ф914, wall thickness from 0.5mm to 60mm), double straight seam (ф630-ф1524, wall thickness from 2mm to 80mm), and circular seam (above ф914, wall thickness from 2mm to 100mm). Dewei’ s main stainless steel grades are: Ni-Alloys (N08904,N06600,N08825,etc),Duplex(S32750,S31803,S3225,etc), Austeni te (310S,309S,316L,321,304L,304 etc ), Copper Nickel Alloy (C70600,C70630) and Ferrite (430,409L etc) and other special material (254SMO,S30815,253MA). Looking forward to building up and developing long-term cooperation with mutual benefits. BACK
  • 5. 主要钢种 Material Available 格尺寸规 Size 1. 奥氏体不锈钢 Austenitic Stainless Steel (310S 、 309S 、 316L 、 321 、 304L 、 304) 2. 双相钢 Duplex ( S32750,S31803, S32760 , S32205) 3. 基合金镍 Nickel-Base Alloy (N08904,N06600,N08825 ) 4. 合金铜镍 Copper Nickel Alloy (C70600, C70620) 5. 素体铁 Ferrite (430, 409L) 6. 其他特殊材料 Other Special Materials (254SMO,S30815,253MA) Single Straight Seam ( Φ6-Φ914 ) Wall Thickness 0.5mm-60mm Double Straight Seam ( Φ630-Φ1524 ) Wall Thickness 2mm-80mm Circular Seam ( above Φ914 ) Wall Thickness 2mm-100mm BACK
  • 6. 检测设备 Inspection Equipment Brittleness Temperature Tester 低温冲击试验 Optical Emission Spectrometer 光 (全元素)直 光电 读 谱仪 Metallurgical Microscope 金相显微镜 Ultrasonic Flaw Detector 超生波无损检测机 X Ray Flaw Detection X 射线实时成像检测机 High Temperature Tensile Testing Machine 高温拉伸试验机 Laboratory 实验室 BACK
  • 7. Hydrostatic Testing Machine 水压试验机 Eddy Current Flaw Detector 涡流探伤机 Intergranular Corrosion Equipment 晶间腐蚀装置 To achieve satisfy customers' expectations, Dewei is totally committed to implementing and maintaining the Quality Management System. Quality problem arising in various areas are to be identified and solved with speed, technical and efficiency. 为实现客户的期望,德威致力于完全执行和实施质量管理体系,确保各个环节中出现的质量问题能够及时、迅速、专业地发现和解决。 Hardness-testing Device 硬度测试仪 Ultrasonic Thickness Gauge 超声波测厚仪 BACK
  • 8. 生 装产 备 Production Equipment 开卷、纵切、收卷机组 Decoiling, Slitting and Rewinding Unit 小口径在线焊管机组 Small Caliber Pipe Production Line JCO 焊管生产线 JCO Welding Production Line 龙门焊接操作机 Gantry Welding Machine BACK
  • 9. JCO 焊管生产线 JCO Welding Production Line 厢式退火炉 Heat Treatment Furnace 龙门焊接操作机 Gantry Welding Machine 天然气退火炉 Gas Annealing Furnace BACK
  • 10. 品展示产 Product Gallery 焊管主要生产标准 : Product Standards for Pipes: 美标: ASTM A778,A312,A249,A269,A358,A409,A554,A668,A789,A790,A928 日标: JIS3459,JS3468 欧标: EN10217-(1--7) 国标: GB/T21832-2008 GB/T24593-2009 GB/T12771-2008, 化工: HG20537.1-92 HG20537.2-92 HG20537.3-92 HG20537.4-92 BACK
  • 12. 品展示产 Product Gallery 管件 根据不同安装使用条件,配套不锈钢管件、 (如弯头,异径管,三通,四通,弯管,翻边等) 常备库存尺寸 * ( 规格因材质而异 ): 3/8“ — 24” ( 17.15mm — 610.08mm ) 生产标准 美标: ASTM A403 , ASME B16.9 国标: GB/T12459-2005 , GB/T13401-2005,SH3048 , SH3409; 德标: DIN2605,DIN2617 俄标: Гoct 17375—2001 , Гoct 17376—2001 , Гoct 17378—2001 欧标: EN10253-3 , EN10253-4 , ISO2037 法兰标准: ASME B 16.5 ASME B16.36 国标: GB9112--9124 * 大尺寸及特殊规格按订单制造。 Fittings We supply ( seamless and welded ) pipe fittings (elbows, reducers, tees, bends, stubs) for different applications. Typical Stock Size Range* (size range might differ based on material grade): 3/8“ — 24” ( 17.15mm — 609.6mm ) *Larger sizes and project specific dimensions manufactured to order. Production standards American Standard : ASTM A403 , ASME B16.9 National Standard : GB/T12459-2005 , GB/T13401-2005,SH3048 , SH3409; BACK
  • 13. 品出产 货 Product Shipment BACK
  • 14. 品出产 货 Product Shipment With good services and prompt delivery, Dewei has gradually established its corporate brand image. 凭借良好的服务,交货的及时,德威已逐步建立起其公司品牌形象。 BACK
  • 15. 资质证书 Certification 企业法人营业执照 Business License 企业法人营业执照 Organization Code Certificate 税务登记证 Tax Registration Certificate; BACK
  • 16. 资质证书 Certification ISO18001 职业健康安全管理体系 ISO18001 OHSAS Certification ISO14001 环境管理体系认证 ISO 14001 Certification BACK
  • 17. 资质证书 Certification 特种设备制造许可 Manufacture License of Special Equipment 对外贸易经营者备案登记表 Foreign Trade Operator Registration Form BACK
  • 19. 资质证书 Certification 美国石油协会认证 API 5LC CRA Line Pipe (耐腐蚀合金管线钢管) BACK
  • 20. 资质证书 Certification ISO 9001 2008 质量管理体系 ISO 9001:2008 Quality Management System Standards 欧盟 PED 认证 PED certificate
  • 21. 资质证书 Certification 德国莱茵 TÜV ASME 认证 TÜV Rheinland ASME Certificate
  • 22. 用 域应 领 Applications LNG 液化天然气 LNG Liquefied Natural Gas 医药领域卫生用管 Pharmaceutical Sanitary Tubes 石油化工配管 Petrochemical Industry 化学品运输船 Chemical Tankers BACK
  • 23. 用 域应 领 Applications 码头工程 Wharf Engineering 电力装备 Electrical Conduits 污水处理 Wastewater Treatment 海洋工程 Ocean Engineering BACK
  • 24. 用 域应 领 Applications 食品级不锈钢管 Food-grade Stainless Steel Pipe 造纸设备 Paper Machinery BACK
  • 25. 企 合作 伴业 伙 Business Partners 以 品 量 秀、售后服 到位,及 的交 率,德威与国内外知名企 建立产 质 优 务 时 货 业 期合作,如太 、印尼金光集 、娃哈哈、 西、法国液空、中海油、长 阳纸业 团 鲁 中石油、中石化等。 Due to excellent after-sale service , high-quality products and prompt delivery, Dewei established long-term cooperation with domestic and overseas well- known enterprise , such as Sun Paper Company, Indonesia Sinar Mas Group, Wahaha, Luxi, French Liquid Air, CNOOC, Petro China, Sinopec and so on. BACK
  • 27. 我联络 们 Welcome to Contact us 注册及工厂地址:浙江省嘉 市南湖区新丰 嘉 路兴 镇 钢 888 号, 314005 Registered &Factory Address: No.888 Jiagang Road, Xinfeng Town, Nanhu Dist., Jiaxing, Zhejiang, China, 314005 售 部:浙江省嘉 市南湖区信 路 部商 花销 总 兴 诚 总 务 园 62 号, 314001 Headquarter Office : No.62 Headquarters Business Garden, Xincheng Road, Nanhu Dist., Jiaxing, Zhejiang, China, 314001 系人联 /Contact: 力 (郑 Tony Zheng ) +86 13957333347 Email:406555519@qq.com http://www.deweigroup.cn/ BACK