HCBBS Forum (English)
HomeForumView Original
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request
English Translations » 【换热设备】 » NB/T47019-2021: New regulations on outer diameter for tubes

NB/T47019-2021: New regulations on outer diameter for tubes used in boilers and heat exchangers – ordering specifications

2021-11-06View Original

Thread Content

Regarding the allowable tolerances for the outer diameter of Grade 1 tube bundles specified in the newly issued technical requirements for heat exchange tubes, which companies are currently capable of meeting them? I placed an order based on GB/T13296, specifying tolerances in line with NB/T47019 for Grade 1 tube bundles; however, the suppliers informed me that it is not possible to meet this requirement. Yet the design drawings specify the use of the new standards
Reply #22024-02-18
Consult the organizations involved in the development of the NB/T47019-2021 standard

Related Threads in This Forum

← Previous

Next →

Translated at 2026-07-23 18:33:46

Original: https://bbs.hcbbs.com/thread-3267372-1-1.html

© 2026 HCBBS Forum. Content translated for international readers.

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.

Quick Links