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quanli sofa spring

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  6. Bonnell Coil Spring
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  6. Bonnell Coil Spring

Bonnell Coil Spring

Premium high coil spring hand‑tied coil system using tempered steel coil springs tied at right arrangement for comfort and proper seat support. Free design construction, hand craft is available to any imaginable shape and size of seat.

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Installation Versatility: can be installed on woven strips or sheets,or webbing,or sinuous spring etc.

Close‑fitting Comfort: free combination create varying degrees comfortable feeling.

Supernormal Durability: heavy gauge, big size, more convolutions spring coils provide a great steady system.

Stable Quality: Quanli’s high tempered spring technology provide consistent quality product.


D(mm)Outside Diameter (mm)Inside Diameter(mm)Number Of TurnsHeight(mm)
3.0-4.080-13040-604-9100-250



                                     


                                                    

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Frequently Asked Questions

Frequently Asked Questions

1Is sampling chargeable? How long does sampling take?
Sampling policies for standard regular items are negotiable. Reasonable sampling fees will be charged for newly customized items requiring new moulds. Standard samples can be finished within 3–5 working days. Lead time for complex customized products will be confirmed separately.
2What is your minimum order quantity? Do you accept both small and bulk orders?
Flexible MOQ is available for in-stock items. More favorable prices are offered for large bulk orders. We establish stable cooperation with large brand manufacturers, trading companies and medium & small furniture factories.
3How long is the validity of a quotation? Will prices be adjusted when steel costs rise?
Standard quotations are valid for 30 days. In case of sharp fluctuations in raw steel prices, we will inform customers of price adjustments in advance. All pricing is transparent without unexpected surcharges.
4Does your company implement a quality management system?
Our factory strictly follows the ISO9000 quality management system. Full inspections are carried out from raw material incoming, production processing to finished goods delivery. Each batch undergoes sampling tests on spring elasticity and fatigue resistance to ensure traceable stable quality.
5Can your products be exported overseas? Can you provide relevant documents?
Our products are sold domestically and exported globally, complying with quality standards of various countries. We are familiar with international trade procedures and can provide customs declaration and certification documents to support export orders.
6What about your production capacity? Can you guarantee stable long-term supply?
Our production base covers over 20,000 square meters, equipped with full sets of automatic production equipment. Sufficient daily output enables us to handle large recurring orders with reliable delivery.
7What is the normal lead time for orders?
In-stock goods can be delivered promptly. The lead time for standard bulk orders is 15–20 working days. Special lead times for extra-large orders or customized products can be negotiated in advance.
8Can you provide technical consultation regarding spring structure and sofa seating comfort design?
Yes. Our professional technical team offers free consultation on spring configuration and structural optimization solutions for our partners.
9What is your company’s business principle?
We adhere to the principle of “Integrity First, Quality Oriented”. With consistent quality, on-time delivery and transparent pricing, we aim to build long-term cooperative relationships with all customers.

QUAN YI SPRING 

HARDWARE CO.,LTD

QUAN YI SPRING 

HARDWARE CO.,LTD

CONTACT

Zhennan Industrial Zone,Jiujiang Town,Nanhai district,Foshan city,Guangdong,China.

Tel: +86 13928225933
Email: quanli@fsquanli.com
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Zhennan Industrial Zone,Jiujiang Town,Nanhai district,Foshan city,Guangdong,China.

Tel: +86 13928225933
Email: quanli@fsquanli.com
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