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| Nominal Size mmvin |
Pipe O.D mm/in |
Working Pressure PS/Mpa |
mm/in | |
| Short | Standard | |||
| 25 1 |
33.7 1.327 |
300 2.07 |
57 | 57 |
| 32 11/4 |
42.4 1.669 |
300 2.07 |
2.244 60 |
2.24 70 |
| 40 11/2 |
48.3 1.900 |
300 2.07 |
2.362 60 |
2.75 70 |
| 50 2 |
60.3 2.375 |
300 2.07 |
2.362 70 |
2.75 83 |
| 65 21/2 |
73.0 2.875 |
300 2.07 |
2.756 76 |
3.27 95 |
| 65 21/2 |
76.1 3 |
300 2.07 |
2.992 6 |
3.74 95 |
| 80 3 |
88.9 3.5 |
300 2.07 |
2.992 90 |
3.74 108 |
| 100 4 |
108 4.252 |
300 2.07 |
3.543 102 4.016 |
4.25 127 |
| 100 4 |
114.3 4.5 |
300 2.07 |
102 4.01 |
5.00 127 |
| 125 5 |
133 5.25 |
300 2.07 |
6 122 4.803 |
5.00 122 |
| 125 5 |
139.7 5.5 |
300 2.07 |
122 4.803 |
4.80 140 |
| 125 5 |
141.3 5.56 |
300 2.07 |
122 4.803 |
5.50 140 5.50 |
| 150 6 |
159 6.25 |
300 2.07 |
140 5.512 |
165 6.50 |
| 150 6 |
165.1 6.5 |
300 2.07 |
140 5.512 |
165 6.50 |
| 150 6 |
168.3 6.625 |
300 2.07 |
140 5.512 |
165 6.50 |
| 200 8 |
219.1 8.625 |
300 2.07 |
175 6.890 |
197 7.75 |
| 250 10 |
273 10.75 |
300 2.07 |
215 8.465 |
229 9.00 |
| 300 12 |
323.9 12.75 |
300 2.07 |
230 9.055 |
254 10.00 |
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Deeply Cultivating a Professional Track, Forging an Industry Giant
In Weifang, the world’s kite capital, Weifang Juntong Machinery Auxiliaries Co.,Ltd. is writing a legendary growth story in the grooved pipe fittings industry with its strong development momentum. Founded in 2004, Juntong Machinery established a high-starting point, high-standard, and large-scale business strategy from the very beginning. Today, it has grown into a modern enterprise integrating design, R&D, production, sales, and service, and is one of the largest professional manufacturers of grooved pipe fittings in Asia, firmly holding the third largest brand position in the industry.
Rugged Quality as a Guarantee, Certification Support for Global Expansion
“Survival through quality, development through technology, and benefits through brand” is the business philosophy that Juntong Machinery has always adhered to. To ensure product quality, the company has established standardized physical and chemical laboratories and mechanical performance laboratories, equipped with a full set of professional testing equipment such as spectrometers, metallographic analyzers, and material testing machines. From raw material selection to finished product delivery, the entire process is strictly controlled. Every product undergoes pressure testing before being released to the market, safeguarding pipeline connection safety with extreme rigor.
Foreign Trade Grows Against the Trend, Global Footprint Expands
Faced with a complex and ever-changing foreign trade environment, Juntong Machinery has achieved steady growth thanks to its technological advantages and accumulated quality. In the first quarter of 2025, the company’s export volume increased by nearly 30% year-on-year, with products exported to more than 30 countries and regions in Europe, South America, North America, and the Middle East, occupying a significant share of the international market. This impressive achievement is attributed to the company’s continuous expansion into new markets and constant improvement in product quality, as well as the precise empowerment from Weifang High-tech Zone—providing “one-stop” guidance through comprehensive business training for export-oriented enterprises, covering trade contract standardization, export tax rebate policies, and TikTok operation techniques, helping enterprises enhance their core capabilities in market expansion and risk prevention.
Seventeen years of dedicated development, solely for the safety and efficiency of pipeline connections.
From Weifang to the world, from workshop to project site.
Weifang Juntong, with an annual production capacity of 150,000 tons and multiple international certifications as its foundation,builds quality with professionalism and connects the world with integrity.
Choose Juntong for grooved pipe fittings, and enjoy worry-free global connectivity.
SERVICES
Services
Design and Consulting Services
Professional advice on grooved fittings material selection, installation guidance, construction code interpretation, as well as maintenance and troubleshooting.
Comprehensive Product Supply Services
Providing basic pipe fittings such as elbows, tees, reducers, as well as core accessories like clamps and sealing rings. Supports customized surface treatments including plastic coating and galvanizing.
After-sales support services
Include 24-hour technical consultation, product maintenance advice, and dedicated maintenance plans for high-demand projects. Additionally, we provide rapid disassembly and replacement guidance for faulty pipe components.
Customer Support
Customer Support:
Providing assistance to clients via multiple channels (phone, email, live chat) to address inquiries, resolve issues, and offer guidance on products or services.
Technical Assistance:
Offering expert help for troubleshooting technical problems related to products, software, or systems, ensuring smooth operation for users.
Billing and Payment Services:
Managing invoicing, processing payments through various methods (credit cards, bank transfers), and handling refunds or adjustments as needed.
Account Management:
Maintaining client accounts, updating information, tracking usage or purchases, and providing personalized support to foster long-term relationships.
Training and Onboarding:
Delivering tutorials, workshops, or materials to help clients or new users learn how to effectively use products, tools, or services.
Feedback and Improvement Services:
Collecting customer opinions through surveys or direct communication, analyzing feedback, and using insights to enhance products, services, or processes.
