We
can produce the A/SA106B/C steel pipes according to the ASME SA106 and ASTM A106 standards, YC has been
granted a number of approval certificate by international institutions, such as
Nuclear pipe certificate, 914mm Cylinder certificate, API monogram and
certificate, ISO9001 by TUV NORD, ISO14001/OHSAS18001 by CQC, approvals from
Shipping Classification Bureaus like DNV, RINA, ABS, Lloyd, GL, Bureau Veritas,
and permit of exporting to Europe as PED 2014/68/EU and AD 2000 certificates
for pressure pipes, CPD (Construction Products Directive), etc.
Chengde have been working on the research.manufacture and sale of seamless pipe about 30 years, and the advantage of core competence is more prominent by integrate in technical.management and market with PCC.
1 The Piercing and rolling technology of Chengde possesses a number of patents in designing and manufacturing the equipment. The production is efficient and flexible, and the quality is stable.
2 The material grade is complete, and the size range is wide (three produce line can manufacture all non-standard sizes). The Minimum Order Quantity (MOQ) as low as ONE piece, and the date of delivery is short with excellent cost performance.
3 The sales and service team is professional and localize.
Mechanical Pipe,Astm A106 Pipe,106B Pipe,Astm A106 Carbon Steel Tube YANGZHOU CHENGDE STEEL PIPE CO.,LTD , https://www.chengdepipe.com
Analysis of the advantages of polyurethane elastomer instead of PVC material
Analysis of the advantages of polyurethane elastomer instead of PVC material
Polyurethane elastomer (TPU), also known as urethane rubber, is an elastic polymer material that contains more urethane (-NHCOO-) characteristic groups in the molecular chain. In the medical field, polyurethane elastomers are the best alternative to pvc. Because the use of PVC sometimes releases phthalates from medical devices, it can cause harm to human health.
The TPU softens when used in the human body. This insert has sufficient rigidity before insertion into the human body, and the flexibility to enter the human body ensures the patient feels comfortable. In addition, the TPU is easy to incinerate and does not release corrosive substances and other hazardous chemicals that can be generated when incinerating PVC. TPU does not require special equipment to process or process, and can be easily disinfected using various methods such as radiation sterilization and ethylene oxide sterilization.
From the point of view of material quality, TPU is significantly stronger than PVC and other alternative materials, and can be made into thin-walled catheters and medical bags with higher internal pressure strength. Medical device structures made with TPU are not only more durable, they use less material, and the resulting medical devices are less likely to be damaged in a frequently used hospital environment. Compared with other materials, it is more resistant to bending, easier to bond, easier to co-extrude with other materials, better biostability and compatibility than other materials. Compared with silicone rubber, it has better mechanical properties and Processing performance, the same strength wall thickness can be thinner, reducing the pain of patients; compared with EVA, with better transparency, and aesthetics. In summary, TPU is the best alternative to PVC in medical devices.
Although PVC is the raw material for traditional manufacturing of medical devices, as people began to pay attention to the environmental impact of PVC and advances in medical research, medical device manufacturers around the world began to use PVC as a raw material to manufacture medical devices. On the contrary, TPU as a substitute for PVC materials, its excellent stability, biocompatibility, processing properties and physical mechanics will certainly develop a broader application in the medical field, gradually replacing PVC as the main raw material for manufacturing medical machinery. This makes the development of TPU more extensive. In short, polyurethane elastomer materials have been increasingly applied to all areas of our daily production and life, and due to its many advantages in performance, polyurethane elastomers have replaced rubber and plastic in many aspects, becoming a new type. The trend of popular polymer materials.